High severity · published Sep 10, 2026
CVE-2026-88883
Renovate before 44.14.4 TLS Private Key Log Sanitisation
7.7
CVSS
0.4%
EPSS
No
On KEV
Description
Renovate is an automated dependency update tool. In versions before 44.14.4 (and Mend Renovate CE/EE images before 15.4.0 and the mend-renovate-enterprise-edition Helm chart before 10.4.0), log sanitisation for TLS private keys used for Mutual TLS was incomplete. While the value of hostRules[].httpsPrivateKey was redacted in the field itself, the same private key value was not redacted if it also appeared elsewhere — for example in another configuration option or in a log message under a key other than httpsPrivateKey — causing the full private key to be written to Renovate's logs in cleartext. This affects deployments that configure Mutual TLS through hostRules[].httpsPrivateKey without passing the value through the documented `secrets` configuration. Anyone able to read the resulting logs can recover the private key. The issue is fixed in Renovate 44.14.4, which redacts any value supplied as hostRules[].httpsPrivateKey wherever it appears in the logs; as a workaround, supply the key via the `secrets` configuration.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ME
mend-renovate-ce · mend
before 15.4.0 · source: vendor
ME
mend-renovate-enterprise-edition · mend
before 10.4.0 · source: vendor
RE
renovate · renovatebot
before 44.14.4 · source: vendor
RE
renovate-ce · mend
before 15.4.0 · source: vendor
RE
renovate-ee-server · mend
before 15.4.0 · source: vendor
RE
renovate-ee-worker · mend
before 15.4.0 · source: vendor
Affected product
ME
mend-renovate-ce
mend
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