HIGHCVSS v4 7.1Vulnerability
CVE-2026-115585
### Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires cross-reference streams with repeated malformed cross-reference streams. ### Patches This has been fixed in [pypdf==6.21.2](https://github.com/py-pdf/pypdf/releases/tag/6.21.2). ### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#4240](https://github.com/py-pdf/pypdf/pull/4240). ### Notes This is a follow-up to https://github.com/py-pdf/pypdf/security/advisories/GHSA-55h5-xmcq-c37v, which had the side-effect of still loading the whole stream again despite the cache being present.
Properties
- Summary
- pypdf: Possible long runtimes for repeated malformed cross-reference entries (Follow-up)
- Severity
- high
- Nvd fetched at
- 2026-10-23T22:30:12.098505+00:00
- Cvss score
- 7.1
- Cvss severity
- HIGH
- Retrieved at
- 2026-10-23T22:32:28+00:00
- Ghsa published
- 2026-10-23T20:54:27Z
- Source url
- https://github.com/advisories/GHSA-jr96-gvgh-j3r4
- Ghsa updated
- 2026-10-23T20:54:28Z
- Ghsa id
- GHSA-jr96-gvgh-j3r4
- Last source
- GitHub Advisory Database
- Score
- 7.1
- Cvss version
- 4.0
- Cve id
- CVE-2026-115585
- Cvss vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- First seen by Signal
- 2026-10-23T22:32:25+00:00
- Is ghsa only
- false
- Vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Published at
- 2026-10-23T20:17:21.230
- Last modified
- 2026-10-23T20:17:21.230
Related Entities (4)
HAS_WEAKNESS (2)
AFFECTS (1)
VULNERABLE_TO (1)
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