BIT-helm-2026-35205: Helm's plugin verification fails open when .prov is missing, allowing unsigned plugin install
Affects helmSource GCVE Database
Not known to be exploited : upgrade to 4.1.4 soon.
Data as of 25 Oct 2026, 19:02 UTC
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
Disclosed: evidence found.
CVE published 13 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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
| Product | Affected | Fixed in |
|---|---|---|
Bitnamihelmpkg:bitnami/helmOther threats | Affected
| Fixed in
|
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
- github.com/helm/helm/commit/05fa37973dc9e42b76e1d2883494c87174b6074f (opens in a new tab)
- github.com/helm/helm/releases/tag/v4.1.4 (opens in a new tab)
- github.com/helm/helm/security/advisories/GHSA-q5jf-9vfq-h4h7 (opens in a new tab)
- helm.sh/docs/topics/provenance/ (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-35205 (opens in a new tab)
- access.redhat.com/errata/RHSA-2026:26441 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-35205 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2456927 (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35205.json (opens in a new tab)