Bug 2526567 (CVE-2026-82398)
| Summary: | CVE-2026-82398 pypdf: pypdf: Denial of Service via inefficient handling of non-whitespace inputs | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | anpicker, aruklets, bbrownin, bparees, doconnor, dschmidt, ebourniv, hasun, jfula, jlanda, jowilson, kshier, nyancey, ometelka, ptisnovs, sbunciak, simaishi, stcannon, syedriko, teagle, xdharmai, yguenane |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in pypdf. An attacker can craft a PDF that causes long runtimes when the `read_until_whitespace` function processes a stream containing a long sequence of bytes without whitespace. This occurs due to inefficient algorithmic complexity, where the function repeatedly performs immutable bytes concatenation in a one-byte loop. This leads to quadratic processing cost and a potential Denial of Service (DoS).
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2528467, 2528466 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-08-31 21:51:20 UTC
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