CVE-2026-91156

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.
• 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

0.48% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 41.2% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Deferred. NVD last modified this record on 2026-10-14.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2026-10-14 15:33Z14 DAYS AGO

Last updated

2026-10-14 17:42Z14 DAYS AGO

Reserved

2026-09-14

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 7.5)

CNA CVSS vector

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

Weaknesses

• CWE-862Missing AuthorizationClass

Data version

5.2

Document digest

ada306e355be035c9bf872e0eb8f29fee70679f8ee5237f4ba1d21c94a01e7b1

• github.comhttps://github.com/discourse/discourse/security/advisories/GHSA-gh4f-qr62-vx8qx_refsource_CONFIRM
• github.comhttps://github.com/discourse/discourse/commit/046fb7bfd68a5b95e63dda88c3c73877c5cf9d5ex_refsource_MISC
• github.comhttps://github.com/discourse/discourse/commit/87b31bf60a7827f075634254379a1dcbaba409cbx_refsource_MISC
• github.comhttps://github.com/discourse/discourse/commit/ba74bb404ab4439f5b1f0204e848d62099db8ae1x_refsource_MISC
• github.comhttps://github.com/discourse/discourse/commit/cac1f26f275cec3dc1dd51dfdac2b3d1a4ec50f8x_refsource_MISC