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CVE-2026-5720

miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of-bounds memory read by exploiting improper length validation in ParseHttpHeaders(), where the parsed length underflows to a large unsigned value when passed to memchr(), causing the process to scan memory far beyond the allocated HTTP reque
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:dd16cfb74afe7c9f30e448561b35f9887ac443bd3505cd8e49069d72888c966b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-191","description":"CWE-191: Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8b62f572f82dfc73d1c32402bfc409129eb98470ea15c3de91f4224daf2af1d · sha256:3931f8a05f16671d… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8b62f572f82dfc73d1c32402bfc409129eb98470ea15c3de91f4224daf2af1d · sha256:3931f8a05f16671d… · /containers/cna/problemTypes/0/descriptions/1

Affected products and versions

1 source assertion
{"defaultStatus":"unknown","product":"miniupnpd","vendor":"miniupnp project","versions":[{"lessThan":"2.3.10","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f8b62f572f82dfc73d1c32402bfc409129eb98470ea15c3de91f4224daf2af1d · sha256:3931f8a05f16671d… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f8b62f572f82dfc73d1c32402bfc409129eb98470ea15c3de91f4224daf2af1d · sha256:3931f8a05f16671d… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-191","description":"CWE-191: Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8b62f572f82dfc73d1c32402bfc409129eb98470ea15c3de91f4224daf2af1d · sha256:3931f8a05f16671d… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f8b62f572f82dfc73d1c32402bfc409129eb98470ea15c3de91f4224daf2af1d · sha256:3931f8a05f16671d… · /containers/cna/problemTypes/0/descriptions/1

Source references

3 source assertions
{"tags":["product"],"url":"https://github.com/miniupnp/miniupnp/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f8b62f572f82dfc73d1c32402bfc409129eb98470ea15c3de91f4224daf2af1d · sha256:3931f8a05f16671d… · /containers/cna/references/0
{"tags":["patch"],"url":"https://github.com/miniupnp/miniupnp/commit/f56bd09b2f2650126b832c5f30a65a09e28167fa"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f8b62f572f82dfc73d1c32402bfc409129eb98470ea15c3de91f4224daf2af1d · sha256:3931f8a05f16671d… · /containers/cna/references/1
{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/miniupnpd-integer-underflow-soapaction-header-parsing"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f8b62f572f82dfc73d1c32402bfc409129eb98470ea15c3de91f4224daf2af1d · sha256:3931f8a05f16671d… · /containers/cna/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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