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VulnerabilityPublished Updated

CVE-2026-9203: Progress Software MarkLogic Server · Server-Side Request Forgery (SSRF)

Affects Progress Software MarkLogic ServerSource CVE Database V5

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Not known to be exploited · CVSS 8.5 High : upgrade to 12.0.3 or 11.3.6 soon.

Data as of 3 Nov 2026, 22:58 UTC

CVSS 3.1 base score
8.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 12.0.3, 11.3.6
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 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 3 Nov 2026.

What to do

Upgrade Progress Software MarkLogic Server to 12.0.3 or 11.3.6.

Affected software

ProductAffectedFixed in
Progress Software CorporationMarkLogic ServerAffected
  • >=12.0.0 <12.0.3
Fixed in
  • 12.0.3
Progress Software CorporationMarkLogic ServerAffected
  • >=11.0.0 <11.3.6
Fixed in
  • 11.3.6

AI-suggested

If you cannot patch yet, restrict access to authenticated users and monitor for suspicious activity related to metadata endpoint access. Avoid exposing MarkLogic Server to untrusted networks where possible.

Description

CVE-2026-9203 is a server-side request forgery (SSRF) vulnerability in Progress Software Corporation's MarkLogic Server. It affects versions 11.0.0 and 12.0.0. The flaw allows an authenticated user with low-privileged roles to bypass protections for cloud instance metadata endpoints. Exploiting this vulnerability can lead to disclosure of cloud credentials and compromise of cloud resources accessible to the affected host. The vulnerability has a high severity with a CVSS score of 8.5.

References

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