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Fencer Intel
high 7.7

CVE-2025-66035 json

Angular HTTP Client Has XSRF Token Leakage via Protocol-Relative URLs

published 2025-11-26 11 mo ago modified 2026-10-19 21 d ago also EUVD-2025-199769 , GHSA-58c5-g7wp-6w37

cvss
7.7
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.16, 20.3.14, and 21.0.1, there is a XSRF token leakage via protocol-relative URLs in angular HTTP clients. The vulnerability is a Credential Leak by App Logic that leads to the unauthorized disclosure of the Cross-Site Request Forgery (XSRF) token to an attacker-controlled domain. Angular's HttpClient has a built-in XSRF protection mechanism that works by checking if a request URL starts with a protocol (http:// or https://) to determine if it is cross-origin. If the URL starts with protocol-relative URL (//), it is incorrectly treated as a same-origin request, and the XSRF token is automatically added to the X-XSRF-TOKEN header. This issue has been patched in versions 19.2.16, 20.3.14, and 21.0.1. A workaround for this issue involves avoiding using protocol-relative URLs (URLs starting with //) in HttpClient requests. All backend communication URLs should be hardcoded as relative paths (starting with a single /) or fully qualified, trusted absolute URLs.

Patch / fix

  • npm @angular/common 19.2.16, 20.3.14, 21.0.1
  • Siemens RUGGEDCOM RST2428P V4.0
  • Siemens SIDIS Prime V4.0.800

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-66035 updated cvss 7.1

angular: Angular HTTP Client Has XSRF Token Leakage via Protocol-Relative URLs

  • Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/kibana6-rhel8
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Ceph Storage 4 ceph, librbd1, librgw2, rbd-nbd, ceph-mds, ceph-mgr, +27 more Red Hat Ceph Storage 5 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mds, +33 more Red Hat Ceph Storage 6 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mib, +16 more Red Hat Ceph Storage 7 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mib, +16 more Red Hat Ceph Storage 8 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mib, +17 more
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 8 mozjs60, intel-cmt-cat Red Hat Enterprise Linux 9 gjs, librbd1, librados2, intel-cmt-cat Red Hat Enterprise Linux 10 gjs, ceph, intel-cmt-cat
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Fuse 7 io.hawt-project, io.apicurio-apicurito, io.hawt-hawtio-online, io.hawt-hawtio-integration, io.syndesis-syndesis-parent Red Hat Single Sign-On 7 org.keycloak-keycloak-parent
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Ceph Storage 9.2 rhceph/rhceph-9-rhel10 1790843527
    fixed: vendor fix RHSA-2026:86618
  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/volsync-rhel9, rhacm2/volsync-operator-bundle
    not affected: component not present
  • Red Hat Ceph Storage 9.2 rhceph/alloy-rhel10 1790774976, rhceph/grafana-rhel10 1790774121, rhceph/keepalived-rhel10 1790842990, rhceph/oauth2-proxy-rhel10 1790774021, rhceph/snmp-notifier-rhel10 1790773439, rhceph/rhceph-haproxy-rhel10 1790846345
    not affected: vulnerable code not present
  • Red Hat Enterprise Linux 7 firefox
    not affected: vulnerable code not in execute path
show 5 more
  • Red Hat Enterprise Linux 8 firefox, grafana, thunderbird, grafana-loki, grafana-mssql, grafana-mysql, +11 more
    not affected: vulnerable code not present
  • Red Hat Enterprise Linux 9 polkit, firefox, grafana, firefox-x11, polkit-libs, thunderbird, +1 more Red Hat Enterprise Linux 10 firefox, grafana, thunderbird
    not affected: vulnerable code not in execute path
  • Red Hat JBoss Enterprise Application Platform 7 io.hawt-project Red Hat JBoss Enterprise Application Platform 8 io.hawt-project Red Hat JBoss Enterprise Application Platform Expansion Pack io.hawt-project
    not affected: vulnerable code not present
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-notebook-controller-rhel8, rhoai/odh-kf-notebook-controller-rhel8 Red Hat OpenStack Platform 16.2 qpid-dispatch-tools, qpid-dispatch-router
    not affected: vulnerable code not in execute path
  • Red Hat Quay 3 quay/quay-rhel8
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-071-03 updated cvss 8.6

Siemens SIDIS Prime

  • Siemens SIDIS Prime < 4.0.800
    affected: fixed in V4.0.800

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
11 mo ago

Exploit prediction

0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 4.0 7.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
CNA 4.0 7.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
npm @angular/common
>=21.0.0-next.0, <21.0.1
>=20.0.0-next.0, <20.3.14
<19.2.16
21.0.1
20.3.14
19.2.16

Affected products

  • angular angular
  • Siemens RUGGEDCOM RST2428P
  • Siemens SIDIS Prime

Classification

Weakness
  • CWE-201 Insertion of Sensitive Information Into Sent Data
  • CWE-359 Exposure of Private Personal Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.