HOME VULNERABILITIESCVE-2026-59935

HIGH

CVE-2026-59935

CWE-835Published: July 8, 2026· Updated: Jul 9, 2026

7.5

CVSS v3.1

EPSS:0.33%probability of exploitation in 30 daysPercentile:24.9th

Official Description

pypdf is a free and open-source pure-python PDF library. Prior to 6.14.2, an attacker can craft a PDF with a page content stream containing a not terminated inline image that uses the ASCII85 or ASCIIHex filters, causing an infinite loop during parsing such as when extracting page text. This issue is fixed in version 6.14.2.

Technical Analysis

CVE-2026-59935 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

pypdf_project1 product(s)

pypdf

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/py-pdf/pypdf/commit/5a33a46416aa1ae6c025ff90a3cca57631fdafd2

PATCHhttps://github.com/py-pdf/pypdf/pull/3892

PATCHhttps://github.com/py-pdf/pypdf/security/advisories/GHSA-g867-7843-wf8q

All References (4)

→

https://github.com/py-pdf/pypdf/commit/5a33a46416aa1ae6c025ff90a3cca57631fdafd2Patch

→

https://github.com/py-pdf/pypdf/pull/3892Issue Tracking · Patch

→

https://github.com/py-pdf/pypdf/releases/tag/6.14.2Product · Release Notes

→

https://github.com/py-pdf/pypdf/security/advisories/GHSA-g867-7843-wf8qPatch · Vendor Advisory

Quick Facts

CVE IDCVE-2026-59935

CVSS Score7.5 / 10

SeverityHIGH

WeaknessCWE-835

CISA KEVNo

EPSS (30d)0.33%

Affected1 vendor(s)

PublishedJul 8, 2026

Related CVEs (CWE-835)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2026-59935 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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