← Vulnerability feed

Vulnerability record · CVE-2026-88883 · published 10 September 2026

CVE-2026-88883: Sensitive information in log file vulnerability

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.

8.3 CVSS 4.0 High EPSS 0.39% · top 70.0% CWE-532 · Sensitive information in log file Awaiting Analysis
8.3CVSS 4.0 base score
0.39%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
10 Sep 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/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:

References

LinkTags
https://github.com/renovatebot/renovate/security/advisories/GHSA-4hmw-qw74-vrhm
https://www.vulncheck.com/advisories/renovate-before-44.14.4-tls-private-key-log-sanitisation

Track CVE-2026-88883 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

4.6CVE-2025-24984Windows NTFS logs sensitive information, enabling physical-attack disclosureWindows NTFS writes sensitive information into a log file, which an attacker can read to disclose data. The flaw is rated CVSS 3.1 4.6 (Medium) and a…KEVEPSS 2.0%analysed4.4CVE-2023-21492Samsung Android kernel pointer logging enables ASLR bypassSamsung Android devices log kernel pointers to a log file before the SMR May-2023 Release 1 fix. A privileged local attacker who can read those logs …KEVEPSS 2.6%analysed

Source: NIST National Vulnerability Database (record CVE-2026-88883), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.