🛡️ CVE-2026-21264 — account

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity high, availability none.

CVSS metrics in full

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

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: Required — someone has to click, open or visit something.
• Scope: Changed — a successful attack reaches components beyond the vulnerable one.
• 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-2026-21264 is classified as CWE-79: Cross-site Scripting (XSS). User-supplied data is written into a page without escaping, so attacker script runs in the browser of anyone who views it.

Affected software

CVE-2026-21264 is recorded against 1 package.

• account

Timeline and source

Published on 22 January 2026 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

msrc.microsoft.com

Other advisories for this package

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

• CVE-2026-56165 (9.8 Critical, published 24 Jul 2026)
• CVE-2026-20994 (6.1 Medium, published 16 Mar 2026)
• CVE-2025-58487 (4.0 Medium, published 2 Dec 2025)
• CVE-2025-58486 (4.0 Medium, published 2 Dec 2025)
• CVE-2025-21076 (5.5 Medium, published 5 Nov 2025)
• CVE-2023-21481 (5.4 Medium, published 3 Sep 2025)
• CVE-2025-21396 (8.2 High, published 29 Jan 2025)
• CVE-2024-20841 (5.1 Medium, published 5 Mar 2024)

Same weakness in other software

These advisories are the same class of weakness (CWE-79: Cross-site Scripting (XSS)) in other software:

• CVE-2017-1000482 (published 9 Jul 2026)
• CVE-2011-4924 (published 9 Jul 2026)
• CVE-2017-20182 (published 7 Jul 2026)
• CVE-2021-3988 (published 7 Jul 2026)
• CVE-2018-25045 (published 6 Jul 2026)
• CVE-2013-2209 (published 6 Jul 2026)
• CVE-2014-0157 (published 6 Jul 2026)
• CVE-2017-1000426 (published 6 Jul 2026)

Details

Affected Packages

References