Vulnerability · Published Oct 15, 2026 · Assigned by eclipse
CVE-2026-19864
Medium 5.6
In plain English
A medium-severity security flaw in org.eclipse.jetty:jetty-security from Eclipse Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | jetty12 | no fix listed | DEBIAN-CVE-2026-19864 |
| Debian:14 | jetty12 | 12.0.39-1 | DEBIAN-CVE-2026-19864 |
| Debian:12 | jetty9 | no fix listed | DEBIAN-CVE-2026-19864 |
| Debian:13 | jetty9 | no fix listed | DEBIAN-CVE-2026-19864 |
| Debian:14 | jetty9 | no fix listed | DEBIAN-CVE-2026-19864 |
| Ubuntu:26.04:LTS | jetty12 | no fix listed | UBUNTU-CVE-2026-19864 |
| Ubuntu:26.10 | jetty12 | no fix listed | UBUNTU-CVE-2026-19864 |
| Ubuntu:22.04:LTS | jetty9 | no fix listed | UBUNTU-CVE-2026-19864 |
| Ubuntu:24.04:LTS | jetty9 | no fix listed | UBUNTU-CVE-2026-19864 |
| Ubuntu:26.04:LTS | jetty9 | no fix listed | UBUNTU-CVE-2026-19864 |
| Ubuntu:26.10 | jetty9 | no fix listed | UBUNTU-CVE-2026-19864 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Eclipse Foundation | org.eclipse.jetty:jetty-security | 9.4.0 – through 9.4.6410.0.0 – through 10.0.3211.0.0 – through 11.0.3212.0.0 – through 12.0.3812.1.0 – through 12.1.12 |
Weakness: CWE-312 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N