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CVE-2026-27739

The Angular SSR is a server-rise rendering tool for Angular applications. Versions prior to 21.2.0-rc.1, 21.1.5, 20.3.17, and 19.2.21 have a Server-Side Request Forgery (SSRF) vulnerability in the Angular SSR request handling pipeline. The vulnerability exists because Angular’s internal URL reconstruction logic directly trusts and consumes user-controlled HTTP headers specifically the Host and `X-Forwarded-*` family to determine the application's base origin without any validation of the destina
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:614a4d9ca0a414175e65139f3cc58421ba1b95142a45357063b0993f14c04ce5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 3 assertions

{"product":"@nguniversal/common","vendor":"angular","versions":[{"status":"affected","version":"<= 16.2.0"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/affected/1

{"product":"@nguniversal/express-engine","vendor":"angular","versions":[{"status":"affected","version":"<= 16.2.0"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/affected/2

{"product":"angular-cli","vendor":"angular","versions":[{"status":"affected","version":">= 21.2.0-next.2, < 21.2.0-rc.0"},{"status":"affected","version":">= 21.0.0-next.0, < 21.1.5"},{"status":"affected","version":">= 20.0.0-next.0, < 20.3.17"},{"status":"affected","version":"< 19.2.21"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/affected/0

Affected products and versions

3 source assertions
{"product":"@nguniversal/common","vendor":"angular","versions":[{"status":"affected","version":"<= 16.2.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/affected/1
{"product":"@nguniversal/express-engine","vendor":"angular","versions":[{"status":"affected","version":"<= 16.2.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/affected/2
{"product":"angular-cli","vendor":"angular","versions":[{"status":"affected","version":">= 21.2.0-next.2, < 21.2.0-rc.0"},{"status":"affected","version":">= 21.0.0-next.0, < 21.1.5"},{"status":"affected","version":">= 20.0.0-next.0, < 20.3.17"},{"status":"affected","version":"< 19.2.21"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":9.2,"baseSeverity":"CRITICAL","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"LOW","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://angular.dev/best-practices/security#preventing-server-side-request-forgery-ssrf","tags":["x_refsource_MISC"],"url":"https://angular.dev/best-practices/security#preventing-server-side-request-forgery-ssrf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/references/2
{"name":"https://developer.mozilla.org/en-US/docs/Web/Security/Attacks/SSRF","tags":["x_refsource_MISC"],"url":"https://developer.mozilla.org/en-US/docs/Web/Security/Attacks/SSRF"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/references/3
{"name":"https://github.com/angular/angular-cli/pull/32516","tags":["x_refsource_MISC"],"url":"https://github.com/angular/angular-cli/pull/32516"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/references/1
{"name":"https://github.com/angular/angular-cli/security/advisories/GHSA-x288-3778-4hhx","tags":["x_refsource_CONFIRM"],"url":"https://github.com/angular/angular-cli/security/advisories/GHSA-x288-3778-4hhx"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:63bde9a011a260371a813872178b4cfb29ad585e80e808bd8da5acbfb54b9e50 · sha256:92edfac1825fcfb6… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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