# CVE-2026-19864: jetty12: Eclipse Jetty's `SessionAuthentication` retains authentication credentials in a serializable object

CVE-2026-19864 is fixed in jetty12 on 1 platform by DEBIAN-CVE-2026-19864 (version 12.0.39-1), released November 4, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-19864
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0010
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 15, 2026

## Description

Eclipse Jetty's `SessionAuthentication` retains authentication credentials in a serializable object. When the credentials contain a plaintext password and the authenticated session is persisted to a session data store, the password may consequently be written to persistent storage in plaintext.    An attacker with sufficient privileges to read the persisted session data may obtain the plaintext passwords of authenticated users.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | jetty12 Debian 14 | 12.0.39-1 | [DEBIAN-CVE-2026-19864](https://patchblox.com/security/data/fix/linux/debian-cve-2026-19864.md) | Nov 4, 2026 |

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Data as of 2026-11-08T19:12:23Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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