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CVE-2026-34785

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Static determines whether a request should be served as a static file using a simple string prefix check. When configured with URL prefixes such as "/css", it matches any request path that begins with that string, including unrelated paths such as "/css-config.env" or "/css-backup.sql". As a result, files under the static root whose names merely share the configured prefix may be served unintentionall
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3f8c9e4ed8d27fab74f74ab9e8d371b91691966ae15caccdcd5c6a7b0ac87f1b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 5 assertions

{"product":"rack","vendor":"rack","versions":[{"status":"affected","version":"< 2.2.23"},{"status":"affected","version":">= 3.0.0.beta1, < 3.1.21"},{"status":"affected","version":">= 3.2.0, < 3.2.6"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/cna/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"],"defaultStatus":"unaffected","packageName":"rubygem-rack","product":"Red Hat Satellite 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/affected/0

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"],"defaultStatus":"unaffected","packageName":"satellite:el8/rubygem-rack-test","product":"Red Hat Satellite 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/affected/3

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"],"defaultStatus":"unaffected","packageName":"satellite-capsule:el8/rubygem-rack","product":"Red Hat Satellite 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"],"defaultStatus":"unaffected","packageName":"rubygem-rack-test","product":"Red Hat Satellite 6","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/affected/1
cwe · 3 assertions

{"cweId":"CWE-187","description":"CWE-187: Partial String Comparison","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-552","description":"Files or Directories Accessible to External Parties","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/problemTypes/0/descriptions/0

{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

5 source assertions
{"product":"rack","vendor":"rack","versions":[{"status":"affected","version":"< 2.2.23"},{"status":"affected","version":">= 3.0.0.beta1, < 3.1.21"},{"status":"affected","version":">= 3.2.0, < 3.2.6"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"],"defaultStatus":"unaffected","packageName":"rubygem-rack","product":"Red Hat Satellite 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/affected/0
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"],"defaultStatus":"unaffected","packageName":"satellite:el8/rubygem-rack-test","product":"Red Hat Satellite 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"],"defaultStatus":"unaffected","packageName":"satellite-capsule:el8/rubygem-rack","product":"Red Hat Satellite 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:satellite:6"],"defaultStatus":"unaffected","packageName":"rubygem-rack-test","product":"Red Hat Satellite 6","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/affected/1

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/metrics/1/cvssV3_1

CWE assertions

3 source assertions
{"cweId":"CWE-187","description":"CWE-187: Partial String Comparison","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-552","description":"Files or Directories Accessible to External Parties","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/problemTypes/0/descriptions/0
{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/cna/problemTypes/1/descriptions/0

Source references

4 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-34785"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/references/0
{"name":"RHBZ#2454486","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2454486"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/references/1
{"name":"https://github.com/rack/rack/security/advisories/GHSA-h2jq-g4cq-5ppq","tags":["x_refsource_CONFIRM"],"url":"https://github.com/rack/rack/security/advisories/GHSA-h2jq-g4cq-5ppq"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34785.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:c4a29a8ff5089f5a06f8c20ba37889a8b941f9cc55b3afcf2ff6e4591a0b105b · sha256:21a297070ffacd2e… · /containers/adp/1/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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