CVE-2026-83611

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• 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

0.61% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 49.5% of scored records. A rank, not a probability.

NVD base score

6.9 (CVSS v4.0), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

NVD analysis status

Deferred. NVD last modified this record on 2026-09-08.

Red Hat severity

Moderate. 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.

Published

2026-09-01 14:34Z1 MO AGO

Last updated

2026-09-01 14:53Z1 MO AGO

Reserved

2026-08-31

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.9)

CNA CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Weaknesses

• CWE-1286Improper Validation of Syntactic Correctness of InputBase

Data version

5.2

Document digest

870e72c8924f7d666ddab8e535073b086d01e354a24d214ba27ac40686db128b

• github.comhttps://github.com/xmldom/xmldom/security/advisories/GHSA-6h8r-xr42-gp59x_refsource_CONFIRM
• github.comhttps://github.com/xmldom/xmldom/pull/1071x_refsource_MISC
• github.comhttps://github.com/xmldom/xmldom/pull/1072x_refsource_MISC
• github.comhttps://github.com/xmldom/xmldom/commit/4430189660b0d380ee9c9ee7550a1358688e8828x_refsource_MISC
• github.comhttps://github.com/xmldom/xmldom/commit/7b2ec67e1750daadd0bb06c92e875e726544a362x_refsource_MISC
• github.comhttps://github.com/xmldom/xmldom/releases/tag/0.8.15x_refsource_MISC
• github.comhttps://github.com/xmldom/xmldom/releases/tag/0.9.12x_refsource_MISC