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CVE-2026-42536

A flaw was found in Apache HTTP Server, specifically within the mod_xml2enc module. This heap-based buffer overflow vulnerability can be triggered when processing untrusted content through the xml2StartParse function. A remote attacker could potentially exploit this to cause a denial of service, information disclosure, or possibly arbitrary code execution.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c1c7b7e51897a95b34a0041595a36d86e0648a9194c56a3964969ba1562c234d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 8 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"httpd:2.4","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"8100020260714175253.489197e6","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","packageName":"httpd-main","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"2.4.68-1.hum1","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/4

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/5

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 10.0 Extended Update Support","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:2.4.63-1.el10_0.4","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/1

{"defaultStatus":"unaffected","product":"Apache HTTP Server","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"2.4.67","status":"affected","version":"2.4.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/6

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:2.4.62-13.el9_8.5","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:2.4.63-13.el10_2.4","versionType":"rpm"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/0
cwe · 2 assertions

{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-120","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/problemTypes/0/descriptions/0

Affected products and versions

8 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:8"],"defaultStatus":"affected","packageName":"httpd:2.4","product":"Red Hat Enterprise Linux 8","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"8100020260714175253.489197e6","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:hummingbird:1"],"defaultStatus":"affected","packageName":"httpd-main","product":"Red Hat Hardened Images","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"2.4.68-1.hum1","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:6"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/5
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux_eus:10.0"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 10.0 Extended Update Support","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:2.4.63-1.el10_0.4","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/1
{"defaultStatus":"unaffected","product":"Apache HTTP Server","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"2.4.67","status":"affected","version":"2.4.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:7"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/6
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 9","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:2.4.62-13.el9_8.5","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:enterprise_linux:10.2"],"defaultStatus":"affected","packageName":"httpd","product":"Red Hat Enterprise Linux 10","vendor":"Red Hat","versions":[{"lessThan":"*","status":"unaffected","version":"0:2.4.63-13.el10_2.4","versionType":"rpm"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/0/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/metrics/1/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-120","description":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/problemTypes/0/descriptions/0

Source references

10 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2026/06/08/9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/1/references/0
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:25042"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/references/7
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:34109"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/references/4
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:41906"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/references/6
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:42828"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/references/5
{"tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:47046"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/references/3
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-42536"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/references/0
{"name":"RHBZ#2486411","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2486411"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/references/1
{"tags":["vendor-advisory"],"url":"https://httpd.apache.org/security/vulnerabilities_24.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42536.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:87633892f43c81a05e110752aec515f5d12c60c106ab4da89950e27d87b0d507 · sha256:26ad59aec2fa632b… · /containers/adp/2/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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