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CVE-2026-47845VulnerabilityPublished

Elasticsearch:

Affects elasticsearchSource GCVE Database

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Authoritative record:CVE-2026-47845· Medium 5.3

Not known to be exploited · CVSS 5.3 Medium : upgrade to 9.2.8-r13 when convenient.

Data as of 14 Nov 2026, 02:05 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 9.2.8-r13
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 Aug 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 elasticsearch to 9.2.8-r13.

Affected software

ProductAffectedFixed in
CleanStartelasticsearchpkg:apk/cleanstart/elasticsearch?arch=x86_64Other threatsAffected
  • <9.2.8-r13
Fixed in
  • 9.2.8-r13
CleanStartelasticsearchpkg:apk/cleanstart/elasticsearch?arch=aarch64Other threatsAffected
  • <9.2.8-r13
Fixed in
  • 9.2.8-r13

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

AI-suggested

Upgrade Elasticsearch to version 9.2.8-r13 or later, where this issue is fixed. Since a patch is available, applying the official fix is the recommended mitigation.

Description

A security vulnerability in Elasticsearch affects versions prior to 9.2.8-r13. The issue arises when the Reactor Netty HTTP Server incorrectly evaluates the remote IP address in specific scenarios where the HAProxy Protocol is enabled. This flaw can lead to incorrect handling of client IP information.

References

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