CVE-2026-58253

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

0.37% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 29.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

Analyzed. NVD last modified this record on 2026-07-13.

Red Hat severity

Important. 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

2026-07-08 19:43Z1 MO AGO

Last updated

2026-07-09 13:35Z1 MO AGO

Reserved

2026-06-29

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

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

Weaknesses

• CWE-287Improper AuthenticationClass
• CWE-551Incorrect Behavior Order: Authorization Before Parsing and CanonicalizationBase

Data version

5.2

Document digest

1190bd61b31fefcdaabdc743730a4e7bd01d85de0068fd56d5b70a6a312a58cc

• github.comhttps://github.com/nats-io/nats-server/security/advisories/GHSA-38x3-76xf-cq45x_refsource_CONFIRM
• github.comhttps://github.com/nats-io/nats-server/commit/7b81dd455ea95960090a84858c7662827948d1b6x_refsource_MISC
• github.comhttps://github.com/nats-io/nats-server/commit/8b8e1ad4ceed32321e00d4fc6e76be05bc13bca6x_refsource_MISC
• github.comhttps://github.com/nats-io/nats-server/commit/b86147e81710a52b72a7f7275f91d69f723f5cb3x_refsource_MISC
• github.comhttps://github.com/nats-io/nats-server/releases/tag/v2.11.16x_refsource_MISC
• github.comhttps://github.com/nats-io/nats-server/releases/tag/v2.12.7x_refsource_MISC
• github.comhttps://github.com/nats-io/nats-server/releases/tag/v2.14.0x_refsource_MISC