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CVE-2026-115356

OpenBao before 2.6.4 and 2.7.0 before 2.7.1 Kubernetes Auth Method Token Renewal After Revocation

Medium5.3EPSS 0.21%
Published
Updated
Reserved
Assigned by
VulnCheck

Description

OpenBao before 2.6.4 and 2.7.x before 2.7.1 does not verify, when renewing a token issued by the Kubernetes Auth method, that the service account token originally used to authenticate is still valid. An authenticated attacker can keep renewing such tokens to persist access after the Kubernetes service account has been deleted.

Timeline

  1. ID reserved

    By VulnCheck

  2. Published

  3. · 1 day later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-115356, by who scored it
Scored byCVSSScoreVector
VulnCheckCNA (assigner)4.0Medium5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
VulnCheckCNA (assigner)3.1Medium5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
NVDNVD · Deferred4.0Medium5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.21% · top 88% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

Affected products

  • openbao · openbao

    • affected < 2.6.4
    • unaffected 2.6.4
    • affected 2.7.0 – < 2.7.1
    • unaffected 2.7.1

References (2)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .