CVE-2026-40260Disclosure(pypdf_project / pypdf)

LOWCVSS 5.3 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who exploits this vulnerability can craft a PDF which leads to large memory usage. This requires parsing the XMP metadata. This issue has been fixed in version 6.10.0.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-776

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • pypdf

Threat summary

  • 3 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 3 signals
  • Disclosure: 3 classified signals
  • Peaked at 2 mentions on most recent observed day (2026-04-17)
  • 3 total mentions across 2 days

Affected systems

Products
pypdf

Deep dive

Activity timeline3 mentions / 2d
01122Mentions · 2026-04-11: 1Mentions · 2026-04-17: 2Technical Details · 2026-04-11: 1Technical Details · 2026-04-17: 204-1104-17
Signal classification1 categories
Disclosure
3100.0%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-04-111
Disclosure1
2026-04-172
Disclosure2
Full discourse3 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-40260 pypdf is a free and open-source pure-python PDF library. In versions prior to 6.10.0, manipulated XMP metadata entity declarations can exhaust RAM. An attacker who ex… https://www.cve.org/CVERecord?id=CVE-2026-40260

    Post summary

    The post announces that CVE‑2026‑40260 in pypdf allows memory exhaustion through manipulated XMP metadata in versions before 6.10.0.

    0000098
    57.2K followersView on X
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-40260 Memory Exhaustion in pypdf Prior to Version 6.10.0 via XMP Metadata https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-40260

    Post summary

    The text announces a memory exhaustion vulnerability (CVE-2026-40260) in pypdf prior to v6.10.0 via XMP metadata, offering a technical description but no PoC, exploit, patch, or report of active exploitation.

    0000047
    4.0K followersView on X
  • DailyCVE@dailycve
    Disclosure

    🟠 pypdf, Memory Exhaustion, #CVE-2026-40260 (Moderate) https://dailycve.com/pypdf-memory-exhaustion-cve-2026-40260-moderate/

    Post summary

    The content announces a new CVE for a memory exhaustion vulnerability in pypdf, indicating moderate severity, but provides no evidence of exploits, PoCs, or patches.

    0000048
    181 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Apppypdf_projectpypdf---

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