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CVE-2026-57204

pypdf is a free and open-source pure-python PDF library. Prior to 6.13.3, a maliciously crafted PDF can cause DoS. An attacker who uses this vulnerability can craft a PDF which leads to large memory usage, as MAX_DECLARED_STREAM_LENGTH is sometimes ignored. This requires parsing a content stream without a /Length value. This issue has been fixed in version 6.13.3.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1bf03070a2b9dd4f9fad4e97a584558f7277aa85e11a4fb87c66dffe00a545db
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"pypdf","vendor":"py-pdf","versions":[{"status":"affected","version":"< 6.13.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4411ecf7a5177c8873c1f9ffc57a9e5020596a9d2e9702c6b25e7ec75ef19f75 · sha256:5292d04220f3bfa4… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4411ecf7a5177c8873c1f9ffc57a9e5020596a9d2e9702c6b25e7ec75ef19f75 · sha256:5292d04220f3bfa4… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:4411ecf7a5177c8873c1f9ffc57a9e5020596a9d2e9702c6b25e7ec75ef19f75 · sha256:5292d04220f3bfa4… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/py-pdf/pypdf/releases/tag/6.13.3","tags":["x_refsource_MISC"],"url":"https://github.com/py-pdf/pypdf/releases/tag/6.13.3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4411ecf7a5177c8873c1f9ffc57a9e5020596a9d2e9702c6b25e7ec75ef19f75 · sha256:5292d04220f3bfa4… · /containers/cna/references/1
{"name":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-jm82-fx9c-mx94","tags":["x_refsource_CONFIRM"],"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-jm82-fx9c-mx94"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4411ecf7a5177c8873c1f9ffc57a9e5020596a9d2e9702c6b25e7ec75ef19f75 · sha256:5292d04220f3bfa4… · /containers/cna/references/0

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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