CVE-2026-88883

HIGHPre-NVD 7.77.7—
EchelonGraph scoreHIGH confidence

Score 7.7 from GitHub Security Advisory (severity: HIGH) published 2026-09-10. a secondary CVSS source baseline 7.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
7.7
EG Score
7.7(high)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity77% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 10, 2026
Patch available. Sources: github.
generic

Renovate before 44.14.4 TLS Private Key Log Sanitisation | Advisories | VulnCheck

https://www.vulncheck.com/advisories/renovate-before-44.14.4-tls-private-key-log-sanitisation
github Patch Available

TLS private keys were previously not sanitised in logs · Advisory · renovatebot/renovate · GitHub

https://github.com/renovatebot/renovate/security/advisories/GHSA-4hmw-qw74-vrhm

Vendor Advisories for CVE-2026-88883(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-20 08:40 UTCGHSA enrichment
  2. 2026-09-19 20:31 UTCEG score recompute
  3. 2026-09-19 20:31 UTCGHSA enrichment
  4. 2026-09-19 08:22 UTCGHSA enrichment
  5. 2026-09-18 20:13 UTCEG score recompute
  6. 2026-09-18 20:13 UTCGHSA enrichment
  7. 2026-09-18 19:28 UTCEPSS rescore
  8. 2026-09-18 08:00 UTCGHSA enrichment
  9. 2026-09-17 19:51 UTCEG score recompute
  10. 2026-09-17 19:50 UTCGHSA enrichment
  11. 2026-09-17 19:32 UTCEPSS rescore
  12. 2026-09-17 06:43 UTCGHSA enrichment
  13. 2026-09-16 18:09 UTCEG score recompute
  14. 2026-09-16 18:09 UTCGHSA enrichment
  15. 2026-09-16 14:09 UTCEPSS rescore
  16. 2026-09-16 05:15 UTCEPSS rescore
  17. 2026-09-16 05:13 UTCGHSA enrichment
  18. 2026-09-15 17:04 UTCGHSA enrichment
  19. 2026-09-15 04:54 UTCEG score recompute
  20. 2026-09-15 04:53 UTCGHSA enrichment
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-14 16:38 UTCGHSA enrichment
  23. 2026-09-14 04:29 UTCEG score recompute
  24. 2026-09-14 04:29 UTCGHSA enrichment
  25. 2026-09-13 16:48 UTCEPSS rescore
Show 16 more
  1. 2026-09-13 16:20 UTCGHSA enrichment
  2. 2026-09-13 04:10 UTCGHSA enrichment
  3. 2026-09-12 16:00 UTCEG score recompute
  4. 2026-09-12 16:00 UTCGHSA enrichment
  5. 2026-09-12 15:02 UTCEPSS rescore
  6. 2026-09-12 03:51 UTCGHSA enrichment
  7. 2026-09-11 15:42 UTCEG score recompute
  8. 2026-09-11 15:42 UTCGHSA enrichment
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 14:53 UTCEPSS rescore
  11. 2026-09-11 03:30 UTCEG score recompute
  12. 2026-09-11 03:30 UTCGHSA enrichment
  13. 2026-09-10 15:21 UTCEG score recompute
  14. 2026-09-10 14:19 UTCEG score recompute
  15. 2026-09-10 13:20 UTCEG score recompute
  16. 2026-09-10 13:20 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-88883?
CVE-2026-88883 is a high vulnerability published on September 10, 2026. 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…
When was CVE-2026-88883 disclosed?
CVE-2026-88883 was first published in the National Vulnerability Database on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88883 actively exploited?
CVE-2026-88883 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 79.2% of all scored CVEs.
What is the CVSS score of CVE-2026-88883?
CVE-2026-88883 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-88883?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88883, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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