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VulnerabilityPublished Updated

CVE-2026-101516: java-17-openjdk security update for AlmaLinux 8

Affects java-17-openjdkSource GCVE Database

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Authoritative record:CVE-2026-101516· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium : upgrade to 1:17.0.21.0.9-2.1.el8 when convenient.

Data as of 29 Oct 2026, 14:41 UTC

CVSS 3.1 base score
6.5Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1:17.0.21.0.9-2.1.el8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 20 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 29 Oct 2026.

What to do

Upgrade the AlmaLinux to 1:17.0.21.0.9-2.1.el8.

Affected software

ProductAffectedFixed in
AlmaLinux 8java-17-openjdkAffected
  • <1:17.0.21.0.9-2.1.el8
Fixed in
  • 1:17.0.21.0.9-2.1.el8
AlmaLinux 8java-17-openjdk-demoAffected
  • <1:17.0.21.0.9-2.1.el8
Fixed in
  • 1:17.0.21.0.9-2.1.el8
AlmaLinux 8java-17-openjdk-demo-fastdebugAffected
  • <1:17.0.21.0.9-2.1.el8
Fixed in
  • 1:17.0.21.0.9-2.1.el8
AlmaLinux 8java-17-openjdk-demo-slowdebugAffected
  • <1:17.0.21.0.9-2.1.el8
Fixed in
  • 1:17.0.21.0.9-2.1.el8
AlmaLinux 8java-17-openjdk-develAffected
  • <1:17.0.21.0.9-2.1.el8
Fixed in
  • 1:17.0.21.0.9-2.1.el8
AlmaLinux 8java-17-openjdk-devel-fastdebugAffected
  • <1:17.0.21.0.9-2.1.el8
Fixed in
  • 1:17.0.21.0.9-2.1.el8

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

AI-suggested

A security update is available and should be applied promptly. The fixed version is 1:17.0.21.0.9-2.1.el8. Users of java-17-openjdk on AlmaLinux 8 and Red Hat Enterprise Linux 8 should update to this version or later to mitigate the vulnerabilities. No additional mitigation actions are required beyond applying the official patch. Note that the OpenJDK RPMs use the system certificate store, so updating the ca-certificates package is also recommended to address related certificate issues.

Description

Multiple security enhancements and fixes have been applied to the java-17-openjdk packages, addressing a wide range of vulnerabilities including certificate handling, TLS handshakes, HTTP client and server processing, image and font rendering, LDAP logins, and Kerberos validation. These fixes are included in the update to version 1:17.0.21.0.9-2.1.el8 for AlmaLinux 8 and related Red Hat Enterprise Linux 8 distributions. The update addresses CVE-2026-101516 among many other CVEs, improving security across various Java components.

References

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