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CVE-2026-33818VulnerabilityPublished Updated

Red Hat Security Advisory: Kiali 2.17.14 for Red Hat OpenShift Service Mesh 3.2

Affects Red HatSource GCVE Database

0

Mentioned vulnerabilities

Authoritative record:CVE-2026-33818· High 7.5

Not known to be exploited · CVSS 7.5 High · fixed in Red Hat package updates : patch Red Hat asn1 soon.

Data as of 26 Oct 2026, 18:42 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 1.27.0-rc.3, 1.26.6, 1.25.13
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Aug 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Upgrade encoding/asn1 to 1.27.0-rc.3, 1.26.6 or 1.25.13.

Affected software

ProductAffectedFixed in
Go standard libraryencoding/asn1Affected
  • >=1.27.0-0 <1.27.0-rc.3
Fixed in
  • 1.27.0-rc.3
Go standard libraryencoding/asn1Affected
  • >=1.26.0-0 <1.26.6
Fixed in
  • 1.26.6
Go standard libraryencoding/asn1Affected
  • <1.25.13
Fixed in
  • 1.25.13
Goencoding/asn1pkg:golang/encoding/asn1Other threatsAffected
  • <1.25.13
  • >=1.26.0-0 <1.26.6
  • >=1.27.0-0 <1.27.0-rc.3
Fixed in
  • 1.25.13
  • 1.26.6
  • 1.27.0-rc.3

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

Description

Kiali 2.17.14, for Red Hat OpenShift Service Mesh 3.2, provides observability for the service mesh by offering a visual representation of the mesh topology and metrics, helping users monitor, trace, and manage efficiently. Security Fix(es): * CVE-2026-56860 openshift-service-mesh/kiali-rhel9: golang net/url: Denial of Service from quadratic complexity in path resolution (OSSM-15402) * CVE-2026-56862 openshift-service-mesh/kiali-rhel9: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (OSSM-15445) * CVE-2026-33818 openshift-service-mesh/kiali-rhel9: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (OSSM-15455) * CVE-2026-59879 openshift-service-mesh/kiali-ossmc-rhel9: Immutable.js: Denial of Service due to mishandling of large index values in List operations (OSSM-15822) * CVE-2026-59879 openshift-service-mesh/kiali-rhel9: Immutable.js: Denial of Service due to mishandling of large index values in List operations (OSSM-15824) * CVE-2026-84375 openshift-service-mesh/kiali-ossmc-rhel9: js-yaml: Denial of Service vulnerability in YAML parsing (OSSM-15846) * CVE-2026-84375 openshift-service-mesh/kiali-rhel9: js-yaml: Denial of Service vulnerability in YAML parsing (OSSM-15847) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

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