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CVE-2026-19864VulnerabilityPublished

Rundeck: Eclipse Jetty's `SessionAuthentication` retains authentication credentials in a serializable object

Affects rundeckSource GCVE Database

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Authoritative record:CVE-2026-19864· Medium 5.6

Not known to be exploited · CVSS 5.6 Medium : upgrade to 6.0.1-r11 when convenient.

Data as of 13 Nov 2026, 01:37 UTC

CVSS 4.0 base score
5.6Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.09% chance of exploitation in 30 days – higher than 0% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 6.0.1-r11
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 15 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade rundeck to 6.0.1-r11.

Affected software

ProductAffectedFixed in
CleanStartrundeckpkg:apk/cleanstart/rundeckOther threatsAffected
  • <6.0.1-r11
Fixed in
  • 6.0.1-r11

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade Rundeck to version 6.0.1-r11 or later, where this vulnerability is fixed. No other mitigation steps are indicated or required according to the available data.

Description

A security vulnerability exists in the Rundeck package where Eclipse Jetty's SessionAuthentication component retains authentication credentials within a serializable object. This could potentially expose sensitive authentication data. The issue affects Rundeck versions prior to 6.0.1-r11. A fix is available in version 6.0.1-r11. The vulnerability has a medium severity rating with a CVSS score of 5.6.

References

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