CVE-2026-28804
Last modified
CVE-2026-28804 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
pypdf is a free and open-source pure-python PDF library. Prior to version 6.7.5, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /ASCIIHexDecode filter. This issue has been patched in version 6.7.5.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
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/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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pypdf Project | Pypdf | < 6.7.5 |
References
- https://github.com/py-pdf/pypdf/pull/3666Issue Tracking, Patch
- https://github.com/py-pdf/pypdf/releases/tag/6.7.5Product, Release Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-9m86-7pmv-2852Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-28804?
How severe is CVE-2026-28804?
How do I fix CVE-2026-28804?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-28799PJSIP is a free and open source multimedia communication lib…7.5
- CVE-2026-2880A vulnerability in @fastify/middie versions < 9.2.0 can resu…9.1
- CVE-2026-28800Natro Macro is an open-source Bee Swarm Simulator macro writ…8
- CVE-2026-28801Natro Macro is an open-source Bee Swarm Simulator macro writ…7.8
- CVE-2026-28802Authlib is a Python library which builds OAuth and OpenID Co…9.8
- CVE-2026-28803Open Forms allows users create and publish smart forms. Prio…6.5
- CVE-2026-28805OpenSTAManager is an open source management software for tec…8.8
- CVE-2026-28806Improper Authorization vulnerability in nerves-hub nerves_hu…8.8
- CVE-2026-28807Improper Limitation of a Pathname to a Restricted Directory …7.5
- CVE-2026-28808Incorrect Authorization vulnerability in Erlang OTP (inets m…9.8
- CVE-2026-28809XML External Entity (XXE) vulnerability in esaml (and its fo…5.3
- CVE-2026-2881A vulnerability has been found in D-Link DWR-M960 1.01.07. T…8.8
Are you affected by CVE-2026-28804?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST