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VulnerabilityPublished

CVE-2026-17143: IBM API Connect · Basic XSS

Affects IBM API ConnectSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium.

Data as of 7 Nov 2026, 05:36 UTC

CVSS 3.1 base score
4.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (ibm)CVSS 3.14.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 7 Nov 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 6 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
IBMAPI ConnectAffected
  • >=12.1.0.0 <=12.1.1.2
  • >=10.0.8.0 <=10.0.8.12
Fixed in–

CPE configurations (4)

  • cpe:2.3:a:ibm:api_connect:12.1.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:api_connect:12.1.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:api_connect:10.0.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:ibm:api_connect:10.0.8.12:*:*:*:*:*:*:*

AI-suggested

Until a fix is available, restrict access to trusted authenticated users and monitor for suspicious activity related to HTML injection attempts.

Description

IBM API Connect versions 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 contain a vulnerability that allows a remote authenticated attacker to perform HTML injection. This is due to improper neutralization of user-supplied input, which could lead to injection of script-related HTML tags.

References

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