CVE-2021-21607

mediumpriority · track · 27EPSS 0.015 · 73 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.46% (73rd) EPSS

CVSS 4 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not limit sizes provided as query parameters to graph-rendering URLs, allowing attackers to request crafted URLs that use all available memory in Jenkins, potentially leading to out of memory errors.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04mediumAV:N/AC:L/Au:S/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-770USprimaryCWE-770US

affected products (7)

Products and version ranges known to be affected.

Jenkins Project Jenkins≤ unspecified ≤2.274enisa_euvdEU
Jenkins Project Jenkins≤ unspecified ≤LTS 2.263.1enisa_euvdEU
jenkins jenkins≤ 2.274nvdUScpe:2.3:a:jenkins:jenkins:*:*:*:*:*:*:*:*
jenkins jenkins≤ 2.263.1nvdUScpe:2.3:a:jenkins:jenkins:*:*:*:*:*:*:*:*
Bitnami jenkins< 2.274.1osvUSpkg:bitnami/jenkins
Maven org.jenkins-ci.main:jenkins-core< 2.263.2osvUSpkg:maven/org.jenkins-ci.main/jenkins-core
Maven org.jenkins-ci.main:jenkins-core2.264 → 2.275osvUSpkg:maven/org.jenkins-ci.main/jenkins-core

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-cxqw-vjcr-gp5gExcessive memory allocation in graph URLs leads to denial of service in Jenkins2022-05-24ghsa · osvUS
Jenkins renders several different graphs for features like agent and label usage statistics, memory usage, or various plugin-provided statistics. Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not limit the graph size provided as query parameters. This allows attackers to request or to have legitimate Jenkins users request crafted URLs that rapidly use all available memory in Jenkins, potentially leading to out of memory errors. Jenkins 2.275, LTS 2.263.2 limits the maximum size of graphs to an area of 10 million pixels. If a larger size is requested, the default size for the graph will be rendered instead. This threshold can be configured by setting the [Java system property](https://www.jenkins.io/doc/book/managing/system-properties/) `hudson.util.Graph.maxArea` to a different number on startup.
BIT-jenkins-2021-216072024-03-06vendor · osvUS
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier does not limit sizes provided as query parameters to graph-rendering URLs, allowing attackers to request crafted URLs that use all available memory in Jenkins, potentially leading to out of memory errors.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2021-01-13modified 2026-06-17

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+3263 more

references (11)

External citations — patches, advisories, analysis.

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