CVE-2026-41080General(libexpat_project / libexpat)

LOWCVSS 2.9 · LOW

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch libexpat_project libexpat systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

libexpat before 2.8.0 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-331

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.

  • libexpat

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-04-17); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Products
libexpat

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-17: 1Mentions · 2026-04-28: 1Patch / Workaround · 2026-04-28: 1Technical Details · 2026-04-17: 1Technical Details · 2026-04-28: 104-1704-28
Signal classification2 categories
General
150.0%
Patch
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-04-171
General1
2026-04-281
Patch1
Full discourse2 posts
  • Open Source Security mailing list@oss_security
    Patch

    libexpat 2.8.0 fixes CVE-2026-41080 (insufficient entropy) https://www.openwall.com/lists/oss-security/2026/04/26/1

    Post summary

    The text announces that libexpat 2.8.0 addresses CVE-2026-41080, citing insufficient entropy as the vulnerability, without any mention of PoC, exploit code or active exploitation.

    00140426
    4.7K followersView on X
  • CVE@CVEnew
    General

    CVE-2026-41080 libexpat before 2.7.6 uses insufficient entropy, and thus hash flooding can occur via a crafted XML document. https://www.cve.org/CVERecord?id=CVE-2026-41080

    Post summary

    The notice identifies a hash flooding risk in libexpat 2.7.6 from insufficient entropy, but offers no PoC, exploit, patch, or evidence of active exploitation.

    0000078
    57.2K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Applibexpat_projectlibexpat---

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