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CVE-2026-49978VulnerabilityPublished Updated

Red Hat Security Advisory: Kiali 2.27.2 for Red Hat OpenShift Service Mesh 3.4

Affects Red HatSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-49978· Medium 6.3

Not known to be exploited · CVSS 6.3 Medium · fixed in Red Hat package updates : update Red Hat dompurify when convenient.

Data as of 30 Oct 2026, 22:42 UTC

CVSS 4.0 base score
6.3Medium
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 3.4.6, 3.4.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 14 Jul 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 30 Oct 2026.

What to do

Upgrade DOMPurify to 3.4.6; dompurify to 3.4.7.

Affected software

ProductAffectedFixed in
cure53DOMPurifyAffected
  • <3.4.6
Fixed in
  • 3.4.6
npmdompurifypkg:npm/dompurifyOther threatsAffected
  • <3.4.7
Fixed in
  • 3.4.7

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

AI-suggested

Red Hat has released Kiali version 2.27.2 for OpenShift Service Mesh 3.4 which addresses these vulnerabilities. Users should upgrade to Kiali 2.27.2 as documented in the official Red Hat advisory and documentation. No additional mitigation steps are indicated beyond applying this update.

Description

Red Hat OpenShift Service Mesh 3.4 includes Kiali 2.27.2, which addresses multiple security vulnerabilities. These include a cross-site scripting (XSS) vulnerability in DOMPurify (CVE-2026-49978) that allows code execution, and a denial of service (DoS) vulnerability in protobufjs (CVE-2026-59877) triggered by crafted .proto schemas. These issues were rated as important by Red Hat and fixed in Kiali 2.27.2.

References

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