THREATPORT/VULNERABILITY/CVE-2026-53435
HIGH SEVERITY

CVE-2026-53435

Jenkins vulnerability

CVSS
8.8
EPSS
18.4%
EPSS pct
97th
Exploited
No known
In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards. This can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.
Affected vendor
Jenkins
Affected product
Jenkins
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-502 — Deserialization of Untrusted Data
Published
2026-06-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 18.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2026-53435

  • Confirm whether Jenkins Jenkins is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2026-53435.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2026-53435

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2026-53435 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2026-53435?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2026-53435.

Start free scan

No credit card. Agentless.

Related vulnerabilities

HIGH
CVE-2019-8099
Acrobat Dc vulnerability
HIGH
CVE-2019-8101
Acrobat Dc vulnerability
HIGH
CVE-2019-8102
Acrobat Dc vulnerability