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CVE-2026-35205VulnerabilityPublished Updated

BIT-helm-2026-35205: Helm's plugin verification fails open when .prov is missing, allowing unsigned plugin install

Affects helmSource GCVE Database

0

Not known to be exploited : upgrade to 4.1.4 soon.

Data as of 25 Oct 2026, 19:02 UTC

Severity
High

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS
0.2% chance of exploitation in 30 days – higher than 12% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.1.4

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Apr 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 2026-10-25.

What to do

Upgrade helm to 4.1.4.

Affected software

ProductAffectedFixed in
Bitnamihelmpkg:bitnami/helmOther threatsAffected
  • >=4.0.0 <4.1.4
Fixed in
  • 4.1.4

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

AI-suggested

Upgrade to Helm version 4.1.4 or later, where this vulnerability is fixed. The vendor advisory confirms that Helm CLI v4.1.4 addresses this issue. No other mitigation is indicated or required.

Description

Helm versions from 4.0.0 up to but not including 4.1.4 have a vulnerability where plugin signature verification fails open if the provenance (.prov) file is missing. This allows installation of unsigned plugins even when signature verification is required. The issue is fixed in Helm version 4.1.4.

References

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