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Jenkins

Vendor security scorecard – 27 CVEs in the selected period

Period: 30d 90d 6m 1y All
Risk 43
27
CVEs
1
Critical
8
High
0
KEV
0
PoC
3
Unpatched C/H
48.1%
Patch Rate
0.0%
Avg EPSS

Severity Breakdown

CRITICAL
1
HIGH
8
MEDIUM
17
LOW
0

Monthly CVE Trend

Top Risky CVEs

CVE Summary Severity CVSS EPSS Priority Signals
CVE-2026-42523 Jenkins GitHub Plugin 1.46.0 and earlier improperly processes the current job URL as part of JavaScript implementing validation of the feature "GitHub CRITICAL 9.0 0.0% 45
CVE-2026-48920 Arbitrary file disclosure in the Jenkins Email Extension Plugin (email-ext) versions 1933.v45cec755423f and earlier lets users who can control email content abuse the data-inline image attribute to supply file: URLs, causing the Jenkins controller to read local files and embed their contents as base64 inside outgoing emails. An authenticated attacker with rights to edit job email configuration or templates (CVSS PR:L) can exfiltrate controller secrets, credentials, and configuration. There is no public exploit identified at time of analysis and CISA's SSVC rates exploitation as none, but the CVSS 8.8 score and 'total' technical impact make controller secret theft a serious concern in shared Jenkins environments. HIGH 8.8 0.0% 44
No patch
CVE-2026-33001 Jenkins versions 2.554 and earlier (LTS 2.541.2 and earlier) contain a path traversal vulnerability in their handling of tar and tar.gz archive extraction that fails to safely process symbolic links, allowing attackers to write files to arbitrary filesystem locations. Attackers with Item/Configure permission or control over Jenkins agent processes can exploit this to deploy malicious scripts and plugins on the Jenkins controller, achieving code execution with the privileges of the Jenkins process. The vulnerability is particularly concerning because it affects the core Jenkins application and enables privilege escalation through plugin installation mechanisms. HIGH 8.8 0.0% 44
CVE-2026-33166 Path traversal in Allure report generator for Jenkins allows unauthenticated attackers to read arbitrary files from the host system by crafting malicious test result files with specially crafted attachment paths. The vulnerability stems from insufficient path validation when processing attachments during report generation, enabling sensitive files to be included in generated reports. A patch is not currently available. HIGH 8.6 0.0% 43
CVE-2026-42524 Jenkins HTML Publisher Plugin 427 and earlier does not escape job name and URL in the legacy wrapper file, resulting in a stored cross-site scripting HIGH 8.0 0.0% 40
CVE-2026-42520 Jenkins Credentials Binding Plugin 719.v80e905ef14eb_ and earlier does not sanitize file names for file and zip file credentials, allowing attackers a HIGH 7.5 0.3% 38
CVE-2026-48922 Arbitrary file write in the Jenkins Credentials Binding Plugin (version 720.v3f6decef43ea_ and earlier) lets users who can supply file or zip-file credentials to a job write files to attacker-chosen paths on the node filesystem, escalating to remote code execution when Jenkins is configured to let a low-privileged user configure such credentials for a job running on the built-in node. The flaw stems from missing file-name sanitization on the file and zip credential types. Rated CVSS 7.5 with high attack complexity (AC:H); no public exploit identified at time of analysis and the issue is not in CISA KEV. HIGH 7.5 0.2% 38
No patch
CVE-2026-48921 Arbitrary file read on the Jenkins controller is possible in the Jenkins 'Pipeline: Groovy Libraries Plugin' (version 797.v90ea_a_9b_e45a_0 and earlier), where the plugin fails to prohibit symbolic links inside shared libraries. An attacker who can control the contents of a shared library consumed by a Pipeline job can plant symlinks that resolve to sensitive files (credentials, secrets, configuration) on the controller filesystem and exfiltrate them through the build. There is no public exploit identified at time of analysis, and SSVC marks exploitation status as none, so this is a patch-and-move-on issue rather than an active-exploitation emergency. HIGH 7.5 0.0% 38
No patch
CVE-2026-33002 Jenkins versions 2.442 through 2.554 and LTS 2.426.3 through 2.541.2 contain an origin validation bypass vulnerability in the CLI WebSocket endpoint that allows attackers to conduct DNS rebinding attacks. The vulnerability stems from improper use of Host and X-Forwarded-Host headers to compute expected request origins, enabling attackers to bypass authentication controls and potentially execute arbitrary commands through the CLI WebSocket interface. While no CVSS score, EPSS data, or active exploitation in the wild (KEV) status has been publicly disclosed, the vulnerability affects a critical Jenkins component and was responsibly disclosed by the Jenkins security team. HIGH 7.5 0.0% 38
CVE-2026-48919 Unsafe deserialization in Jenkins Active Directory Plugin 2.41 and earlier allows a remote attacker holding administrative credentials to achieve full system compromise by manipulating the LDAP referral processing path. The plugin deserializes data received from LDAP referrals without validation (CWE-502), which can enable arbitrary code execution on the Jenkins controller. No public exploit exists at time of analysis, and CISA SSVC assesses this as not automatable, though technical impact is rated total - making it a targeted rather than opportunistic threat. MEDIUM 6.6 0.1% 33
No patch
CVE-2026-48918 Server-Side Request Forgery in Jenkins Active Directory Plugin 2.41 and earlier enables a highly privileged attacker to abuse the plugin's default LDAP referral-following behavior to force Jenkins to issue out-of-band requests to attacker-controlled or internal network hosts. The vulnerability (CWE-918) stems from the plugin not restricting LDAP referrals by default, which can be weaponized to pivot from the Jenkins server into internal infrastructure. No public exploit code exists and SSVC confirms no known active exploitation, but the technical impact is rated total - confidentiality, integrity, and availability are all at risk if exploitation succeeds. MEDIUM 6.6 0.0% 33
No patch
CVE-2026-48916 Unconstrained LDAP referral following in Jenkins LDAP Plugin (≤ 807.v7d7de30930cf) enables Server-Side Request Forgery, allowing a highly privileged attacker who controls LDAP configuration to force the Jenkins server to initiate connections to arbitrary internal hosts by supplying a malicious LDAP server that returns crafted referrals. The CVSS score of 6.6 reflects genuine constraints: network-reachable but requiring both high privileges and high attack complexity, with High confidentiality, integrity, and availability impact if those barriers are cleared. SSVC assessment confirms no current exploitation and a non-automatable attack path, though technical impact is rated total; no public exploit code has been identified at time of analysis. MEDIUM 6.6 0.0% 33
No patch
CVE-2026-48917 Jenkins LDAP Plugin versions up to and including 807.v7d7de30930cf deserializes Java objects returned via LDAP referral responses without any validation, exposing the underlying Jenkins instance to potential remote code execution via classic Java deserialization gadget chains. Exploitation is constrained by a high privilege requirement and high attack complexity (CVSS PR:H/AC:H), limiting realistic scenarios to attackers who already hold Jenkins administrative credentials or can manipulate LDAP referral destinations. No public exploit code has been identified and this vulnerability does not appear in the CISA KEV catalog at time of analysis. MEDIUM 6.6 0.1% 33
No patch
CVE-2026-42521 Jenkins Matrix Authorization Strategy Plugin 2.0-beta-1 through 3.2.9 (both inclusive) invokes parameterless constructors of classes specified in conf MEDIUM 6.5 0.0% 33
CVE-2026-48927 Stored cross-site scripting in Jenkins buildgraph-view Plugin 1.8 and earlier allows authenticated attackers with job or view configuration privileges to inject persistent malicious scripts via an unescaped build URL. Any Jenkins user who subsequently views the affected build graph page triggers execution of the attacker-controlled script in their browser context. No active exploitation is confirmed (not in CISA KEV) and no public exploit code is known; SSVC rates exploitation status as none with partial technical impact. MEDIUM 5.5 0.0% 28
No patch

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