synced 1 MIN AGO
01 Record

CVE-2026-41080

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

LowPUBLISHEDCNA: mitre
CNA base score2.9 CVSS v3.xCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

02 Description

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

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.39% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 33.7% of scored records. A rank, not a probability.
NVD base score
2.9 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
NVD analysis status
Modified. NVD last modified this record on 2026-07-14.
Red Hat severity
Low. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-04-16 16:52Z6 MO AGO
Last updated
2026-10-15 01:18Z14 DAYS AGO
Reserved
2026-04-16
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Low (CVSS 2.9)
CNA CVSS vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
Data version
5.2
Document digest
49fdcab0300569056f86fe32be94764cb1858039ecd2811a3c948797f206eb75

05 Affected products

VendorProductVersionsPlatforms
libexpat projectlibexpat0 to < 2.8.0—

06 References

07 Fixed in

Debian 12

  • expat
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • expat
    Fixed in 2.8.2-1~deb13u1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • expat
    Fixed in 2.8.0-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 16.04 LTS

  • cadaver
    No fix yet
  • gdcm
    No fix yet
  • insighttoolkit4
    No fix yet
  • matanza
    No fix yet
  • smart
    No fix yet
  • tdom
    No fix yet
  • wbxml2
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • cadaver
    No fix yet
  • gdcm
    No fix yet
  • insighttoolkit4
    No fix yet
  • matanza
    No fix yet
  • smart
    No fix yet
  • tdom
    No fix yet
  • vnc4
    No fix yet
  • wbxml2
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • cadaver
    No fix yet
  • insighttoolkit4
    No fix yet
  • matanza
    No fix yet
  • tdom
    No fix yet
  • wbxml2
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • cadaver
    No fix yet
  • expat
    No fix yet
  • insighttoolkit4
    No fix yet
  • matanza
    No fix yet
  • tdom
    No fix yet
  • wbxml2
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • cadaver
    No fix yet
  • expat
    Fixed in 2.6.1-2ubuntu0.5
  • matanza
    No fix yet
  • tdom
    No fix yet
  • wbxml2
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • cadaver
    No fix yet
  • expat
    No fix yet
  • matanza
    No fix yet
  • swish-e
    No fix yet
  • tdom
    No fix yet
  • wbxml2
    No fix yet
  • xmlrpc-c
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • cadaver
    No fix yet
  • expat
    Fixed in 2.7.4-1ubuntu0.1
  • matanza
    No fix yet
  • tdom
    No fix yet
  • wbxml2
    No fix yet
  • xmlrpc-c
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.10

  • cadaver
    No fix yet
  • matanza
    No fix yet
  • swish-e
    No fix yet
  • tdom
    No fix yet
  • wbxml2
    No fix yet
  • xmlrpc-c
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 14.04 LTS

  • coin3
    No fix yet
  • expat
    Fixed in 2.1.0-4ubuntu1.4+esm12
    Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro
  • vnc4
    No fix yet
  • vtk
    No fix yet
  • xmlrpc-c
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 16.04 LTS

  • ayttm
    No fix yet
  • cableswig
    No fix yet
  • coin3
    No fix yet
  • expat
    Fixed in 2.1.0-7ubuntu0.16.04.5+esm12
    Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro
  • libxmltok
    No fix yet
  • swish-e
    No fix yet
  • vnc4
    No fix yet
  • vtk
    No fix yet
  • xmlrpc-c
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 18.04 LTS

  • coin3
    No fix yet
  • expat
    No fix yet
  • libxmltok
    No fix yet
  • swish-e
    No fix yet
  • xmlrpc-c
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 20.04 LTS

  • expat
    No fix yet
  • libxmltok
    No fix yet
  • swish-e
    No fix yet
  • xmlrpc-c
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 22.04 LTS

  • libxmltok
    No fix yet
  • swish-e
    No fix yet
  • xmlrpc-c
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 24.04 LTS

  • libxmltok
    No fix yet
  • swish-e
    No fix yet
  • xmlrpc-c
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu Pro 26.04 LTS

  • swish-e
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.