CVE-2026-50170

Angular: Information Leak via Default Caching of Credentialed Requests in HttpTransferCache

HIGH 8.2

At a glance

Source: NVD
EPSS: EPSS 0.43 % · percentile 37 (2026-10-28)
State: PUBLISHED
Published: 2026-06-22 15:39 UTC
Updated: 2026-06-23 16:00 UTC
Assigner: GitHub_M
NVD status: Analyzed

Description

Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23, a vulnerability was discovered in @angular/common when Server-Side Rendering (SSR) and hydration are enabled. The HttpTransferCache utility optimizes hydration by caching outgoing HTTP requests performed during SSR and transferring the cached state to the client-side application via TransferState. However, the caching mechanism fails to inspect the withCredentials flag or the Cookie header of outgoing requests. As a result, credentialed, user-specific responses may be cached by default in the shared TransferState payload. When these responses are serialized into the HTML, any caching layer (such as a CDN, reverse proxy, or shared server cache) that caches the SSR-rendered HTML page could inadvertently cache and leak one user's private data to other users, leading to a high-severity information disclosure vulnerability. This vulnerability is fixed in 22.0.0-rc.2, 21.2.15, 20.3.22, and 19.2.23.

Weaknesses (CWE)

CWE-524 — Use of Cache Containing Sensitive Information

References

Scores

Version	Score	Vector	Scored by
CVSS 4.0	HIGH 8.2	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	GitHub_M
CVSS 4.0	HIGH 8.2	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/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	NVD · security-advisories@github.com (Secondary)
CVSS 3.1	HIGH 7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	NVD · nvd@nist.gov (Primary)

Advisories

GHSA-q6f4-qqrg-jv6x — @angular/common: Information Leak via Default Caching of Credentialed Requests in HttpTransferCache

European references

ENISA EUVD · EUVD-2026-38292
GCVE · GCVE-0-2026-50170

CERT-FR advisories

CERTFR-2026-AVI-0933 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* ≤ 18.2.14
cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* ≥ 19.0.0 < 19.2.23
cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* ≥ 20.0.0 < 20.3.22
cpe:2.3:a:angular:angular:*:*:*:*:*:node.js:*:* ≥ 21.0.0 < 21.2.15
cpe:2.3:a:angular:angular:22.0.0:next0:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next1:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next10:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next11:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next12:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next2:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next3:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next4:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next5:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next6:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next7:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next8:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:next9:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:rc0:*:*:*:node.js:*:*
cpe:2.3:a:angular:angular:22.0.0:rc1:*:*:*:node.js:*:*

Affected products

Product	Versions
angular · angular	affected >= 22.0.0-next.0, < 22.0.0-rc.2 ; affected >= 21.0.0-next.0, < 21.2.15 ; affected >= 20.0.0-next.0, < 20.3.22 ; affected >= 19.0.0-next.0, < 19.2.23 ; affected <= 18.2.14

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD