{"id":"CVE-2026-102993","state":"PUBLISHED","title":"pypdf: Possible large memory usage when retrieving Roman page labels","description":"pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an application retrieves document page labels, consuming large amounts of memory and potentially making the application unavailable. This issue is fixed in version 6.17.0.","publishedAt":"2026-09-30T19:55:52.294Z","updatedAt":"2026-10-02T16:32:16.809Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["py-pdf pypdf"],"affected":[{"vendor":"py-pdf","product":"pypdf","versions":[{"version":"< 6.17.0","status":"affected"}]}],"references":["https://github.com/py-pdf/pypdf/security/advisories/GHSA-qv6h-rv94-w285","https://github.com/py-pdf/pypdf/pull/4047","https://github.com/py-pdf/pypdf/commit/89db7c4fe9315ecc964bfdf05a4e8c4b94175163","https://github.com/py-pdf/pypdf/releases/tag/6.17.0"],"weaknesses":["CWE-400","CWE-770"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/102xxx/CVE-2026-102993.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102993","state":"PUBLISHED","datePublished":"2026-09-30T19:55:52.294Z","dateUpdated":"2026-10-02T16:32:16.809Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-29T20:46:08.334Z"},"containers":{"cna":{"title":"pypdf: Possible large memory usage when retrieving Roman page labels","descriptions":[{"lang":"en","value":"pypdf is a free and open-source pure-python PDF library. Prior to 6.17.0, a crafted PDF can provide unusually large Roman page-label values that cause pypdf/_page_labels.py to generate excessively large numeral strings when an application retrieves document page labels, consuming large amounts of memory and potentially making the application unavailable. This issue is fixed in version 6.17.0."}],"affected":[{"vendor":"py-pdf","product":"pypdf","versions":[{"version":"< 6.17.0","status":"affected"}]}],"references":[{"url":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-qv6h-rv94-w285","name":"https://github.com/py-pdf/pypdf/security/advisories/GHSA-qv6h-rv94-w285","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/py-pdf/pypdf/pull/4047","name":"https://github.com/py-pdf/pypdf/pull/4047","tags":["x_refsource_MISC"]},{"url":"https://github.com/py-pdf/pypdf/commit/89db7c4fe9315ecc964bfdf05a4e8c4b94175163","name":"https://github.com/py-pdf/pypdf/commit/89db7c4fe9315ecc964bfdf05a4e8c4b94175163","tags":["x_refsource_MISC"]},{"url":"https://github.com/py-pdf/pypdf/releases/tag/6.17.0","name":"https://github.com/py-pdf/pypdf/releases/tag/6.17.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-30T19:55:52.294Z"},"source":{"advisory":"GHSA-qv6h-rv94-w285","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-02T16:31:55.843886Z","id":"CVE-2026-102993","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-02T16:32:16.809Z"}}]}}}