🛡️ CVE-2026-58156 — traffic-server

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
• Privileges required: Low — an ordinary user account is enough.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Changed — a successful attack reaches components beyond the vulnerable one.
• Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: None.

Weakness class

CVE-2026-58156 is classified as CWE-863: Incorrect Authorization. An authorisation check runs but reaches the wrong conclusion, permitting actions it should refuse.

Affected software

CVE-2026-58156 is recorded against 1 package.

• traffic-server (from 10.0.0 up to 10.1.4)

Timeline and source

Published on 29 July 2026 and last revised on 3 August 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

lists.apache.org

Other advisories for this package

traffic-server has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-58187 (3.7 Low, published 29 Jul 2026)
• CVE-2026-58163 (7.5 High, published 29 Jul 2026)
• CVE-2026-57834 (10.0 Critical, published 29 Jul 2026)
• CVE-2026-65325 (4.8 Medium, published 29 Jul 2026)
• CVE-2026-58180 (7.5 High, published 29 Jul 2026)
• CVE-2026-58155 (9.3 Critical, published 29 Jul 2026)
• CVE-2026-58186 (7.5 High, published 29 Jul 2026)
• CVE-2026-58162 (10.0 Critical, published 29 Jul 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-863: Incorrect Authorization) in other software:

• CVE-2025-14562 (2.0 Low, published 17 Aug 2026)
• CVE-2025-30238 (published 10 Aug 2026)
• CVE-2025-15674 (2.7 Low, published 6 Aug 2026)
• CVE-2025-10656 (9.8 Critical, published 29 Jul 2026)
• CVE-2024-24779 (5.0 Medium, published 7 Jul 2026)
• CVE-2024-26016 (5.0 Medium, published 7 Jul 2026)
• CVE-2024-23823 (4.2 Medium, published 7 Jul 2026)
• CVE-2023-32672 (5.0 Medium, published 7 Jul 2026)

Details

Affected Packages

References