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NVD / CVE Program· CNA jenkins

CVE-2021-21626: Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation…

MediumCVSS 4.3 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.85% (FIRST EPSS); higher than 58.8% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: io.jenkins.plugins:warnings-ng (Maven) 8.5.0.

Low priority for now. Upgrade to io.jenkins.plugins:warnings-ng (Maven) 8.5.0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents.

Published
Mar 18, 2021
Updated
Jun 16, 2026
EPSS
0.8% · 58th percentile

Report tools

JSON

Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
jenkinswarnings next generation

Versions reported by the vendor

Affected version ranges reported by the assigning authority (jenkins). Independent of NVD's CPE analysis and usually ahead of it.

  • Jenkins project Jenkins Warnings Next Generation Plugin

    • 8.4.3.1not affected
    • unspecified and later · up to and including 8.4.4affected

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • jenkins warnings next generationup to 8.4.4 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavenio.jenkins.plugins:warnings-ngbefore 8.5.08.5.0

Same product

jenkins: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-1003008A cross-site request forgery vulnerability exists in Jenkins Warnings Next Generation Plugin 2.1.1 and earlier in…
    35Monitor
  • CVE-2022-23107Jenkins Warnings Next Generation Plugin 9.10.2 and earlier does not restrict the name of a file when configuring custom ID, allowing…
    33Monitor
  • CVE-2019-1003023A cross-site scripting vulnerability exists in Jenkins Warnings Next Generation Plugin 1.0.1 and earlier in…
    24Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2019-10325May 31, 2019 · A cross-site scripting vulnerability in Jenkins Warnings NG Plugin 5.0.0 and earlier allowed attacker with Job/Configure permission to…
    21Monitor
  • ← EarlierCVE-2019-10326May 31, 2019 · A cross-site request forgery vulnerability in Jenkins Warnings NG Plugin 5.0.0 and earlier allowed attackers to reset warning counts for…
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Maven:io.jenkins.plugins:warnings-ng8.5.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-862 · Missing Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Show all references (1 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records