CVE-2026-91157

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 2026-10-20.

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 15:37Z14 DAYS AGO

Last updated

2026-10-20 01:35Z9 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-200Exposure of Sensitive Information to an Unauthorized ActorClass
• CWE-863Incorrect AuthorizationClass

Data version

5.2

Document digest

f79df2ba4c4368821713abd1eab24bc57285ac3644f8f9ceb43b45aaf0b7b082

• github.comhttps://github.com/discourse/discourse/security/advisories/GHSA-298h-xgw6-4pv3x_refsource_CONFIRM
• github.comhttps://github.com/discourse/discourse/commit/16017732981fdb3ee65d7b3c69c573610bf02aabx_refsource_MISC
• github.comhttps://github.com/discourse/discourse/commit/83f5f9f1df7ddc79ec0950e1b2038ba659635708x_refsource_MISC
• github.comhttps://github.com/discourse/discourse/commit/98f1c021d0e956cded5239a5d8a6afe2b9e1b7e7x_refsource_MISC
• github.comhttps://github.com/discourse/discourse/commit/b2fb98394b2636b29e850f06b0029f8ca8b48458x_refsource_MISC