CVE-2026-88883 (GCVE-0-2026-88883)
Vulnerability from cvelistv5 – Published: 2026-09-10 13:05 – Updated: 2026-09-10 14:55
VLAI
EPSS
VEX
Title
Renovate before 44.14.4 TLS Private Key Log Sanitisation
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 14:18 UTC
CWE
- CWE-532 - Insertion of Sensitive Information into Log File
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/renovatebot/renovate/security/… | vendor-advisory |
| https://www.vulncheck.com/advisories/renovate-bef… | third-party-advisory |
Impacted products
3 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| renovatebot | renovate |
Affected:
0 , < 44.14.44
(semver)
Unaffected: 44.14.44 (semver) |
guessed | |
| renovatebot | renovate |
Affected:
0 , < 15.4.0
(semver)
Unaffected: 15.4.0 (semver) |
guessed | |
| renovatebot | renovate |
Affected:
0 , < 10.4.0
(semver)
Unaffected: 10.4.0 (semver) |
guessed |
Date Public
2026-08-27 00:00
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"initial_release_date": "2026-09-10T13:05:33.976000+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "renovate: Renovate: Information disclosure of TLS private keys via incomplete log sanitization",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-88883.json",
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},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-88883\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-10T14:18:26.314591Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-10T14:18:27.262Z\"}}], \"cna\": {\"title\": \"Renovate before 44.14.4 TLS Private Key Log Sanitisation\", \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"jamietanna\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 8.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"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\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"LOW\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"HIGH\", \"vulnConfidentialityImpact\": \"HIGH\"}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 7.7, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"44.14.44\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"44.14.44\", \"versionType\": \"semver\"}], \"packageURL\": \"pkg:npm/renovate\", \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"44.14.44\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"44.14.44\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"44.14.44\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"44.14.44\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"44.14.44\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"44.14.44\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"15.4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"15.4.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"15.4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"15.4.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"15.4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"15.4.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", 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\"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"15.4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"15.4.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"15.4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"15.4.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"15.4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"15.4.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"15.4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"15.4.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"10.4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"10.4.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"renovatebot\", \"product\": \"renovate\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"10.4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"10.4.0\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-08-27T00:00:00.000Z\", \"references\": [{\"url\": \"https://github.com/renovatebot/renovate/security/advisories/GHSA-4hmw-qw74-vrhm\", \"name\": \"GitHub Security Advisory (GHSA-4hmw-qw74-vrhm)\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://www.vulncheck.com/advisories/renovate-before-44.14.4-tls-private-key-log-sanitisation\", \"name\": \"VulnCheck Advisory: Renovate before 44.14.4 TLS Private Key Log Sanitisation\", \"tags\": [\"third-party-advisory\"]}], \"x_generator\": {\"engine\": \"vulncheck-endgame\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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 \\u2014 for example in another configuration option or in a log message under a key other than httpsPrivateKey \\u2014 causing the full private key to be written to Renovate\u0027s 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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-532\", \"description\": \"Insertion of Sensitive Information into Log File\"}]}], \"providerMetadata\": {\"orgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"shortName\": \"VulnCheck\", \"dateUpdated\": \"2026-09-10T13:05:33.976Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-88883\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-10T14:55:53.845Z\", \"dateReserved\": \"2026-09-10T11:25:34.912Z\", \"assignerOrgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"datePublished\": \"2026-09-10T13:05:33.976Z\", \"assignerShortName\": \"VulnCheck\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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