CVE-2026-70428: Jenkins 2.575 and earlier, LTS 2.568.1 and earlier improperly identifies file paths attempting path traversal in file parameter names, allowing attackers with Item/Configure and It

mediumCVSS 4.3CVE-2026-70428

Jenkins 2.575 and earlier, LTS 2.568.1 and earlier improperly identifies file paths attempting path traversal in file parameter names, allowing attackers with Item/Configure and Item/Build permission to write files to arbitrary locations on the controller file system.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: medium — CVSS 4.3
Published: 2026-08-05
Last updated: 2026-08-05
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-70428

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-704280.24% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-70428	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

high[NEW] [high] Jenkins Plugins: Multiple vulnerabilitiescert-bund
unknownJenkins Multiple Vulnerabilitieshkcert
unknownJenkins Security Advisory 2026-08-05jenkins

Recent advisories for Jenkins

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownJenkins security advisory (AV26-782)cccs · 2026-08-06
high[NEW] [high] Jenkins Plugins: Multiple vulnerabilitiescert-bund · 2026-08-06
unknownJenkins Multiple Vulnerabilitieshkcert · 2026-08-06
highCVE-2026-70448: Jenkins Ivy Report Plugin 1.2 and earlier does not configure its XML parser to prevent XML ext…nvd · 2026-08-05
mediumCVE-2026-70447: Missing permission checks in Jenkins AWS CodeBuild Plugin 0.59 and earlier allow attackers wit…nvd · 2026-08-05
mediumCVE-2026-70446: Missing permission checks in Jenkins CodeSonar Plugin 3.6.0 and earlier allow attackers with O…nvd · 2026-08-05