🛡️ CVE-2026-8673 — avantra

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/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: High — administrative rights are needed first.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Unchanged — the damage stays inside the vulnerable component.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: High — total loss, or loss the attacker controls.
• Availability impact: None.

Weakness class

CVE-2026-8673 is classified as CWE-523: Unprotected Transport of Credentials. Credentials travel over a channel that does not protect them from observation.

Affected software

CVE-2026-8673 is recorded against 1 package.

• avantra (fixed in 25.3.0)

Timeline and source

Published on 22 May 2026 and last revised on 23 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

support.avantra.com

Other advisories for this package

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

• CVE-2026-8670 (9.6 Critical, published 22 May 2026)
• CVE-2026-8672 (5.1 Medium, published 22 May 2026)
• CVE-2026-8671 (7.5 High, published 22 May 2026)

Same weakness in other software

These advisories are the same class of weakness (CWE-523: Unprotected Transport of Credentials) in other software:

• CVE-2026-56587 (3.7 Low, published 21 Jul 2026)
• CVE-2026-8668 (published 18 Jun 2026)
• CVE-2026-23635 (6.5 Medium, published 25 Mar 2026)
• CVE-2023-28708 (5.0 Medium, published 24 Mar 2026)
• CVE-2025-64309 (7.4 High, published 15 Nov 2025)
• CVE-2025-64308 (6.5 Medium, published 15 Nov 2025)
• CVE-2025-61121 (7.5 High, published 30 Oct 2025)
• CVE-2025-41705 (6.8 Medium, published 14 Oct 2025)

Details

Affected Packages

References