CVE-2026-50555

MEDIUMNVD 6.16.1—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 94% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.1
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.1Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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, 21.2.16, 20.3.24, and 19.2.25, a Cross-Site Scripting (XSS) vulnerability exists in @angular/platform-server's DOM emulation dependency (domino) when serializing the content of raw-text elements (such as , , and ). domino supports escaping raw-text elements during serialization to prevent closing-tag breakout. However, a Unicode index alignment bug existed in this escaping logic. In JavaScript, string lengths and character indices are calculated based on UTF-16 code units (where astral characters—such as emojis—occupy 2 code units / 4 bytes). If the bound dynamic text contained astral Unicode characters before the closing tag (e.g. , , or ), the index offset calculation in domino's replacement logic shifted. This misalignment caused domino to fail to replace or escape the closing tag, leaving it raw and unescaped in the output HTML. An attacker who controls the dynamic text can supply a payload containing both an astral Unicode character and a closing tag (e.g., 😀alert(1)). When serialized on the server during SSR, the browser parses the unescaped closing tag, exits the raw-text context early, and executes the subsequent block, leading to same-origin Cross-Site Scripting (XSS). This vulnerability is fixed in 22.0.0-rc.2, 21.2.16, 20.3.24, and 19.2.25.

CVSS v3
6.1
EG Score
6.1(medium)
EPSS
6.3%
KEV
Not listed

Published

June 15, 2026

Last Modified

June 26, 2026

Advisory Details (2)

Auto-updated Jun 22, 2026
Patch available. Sources: github, github_pr.
github_pr

fix: Escapes in raw text

Fix merged in angular/domino PR #29 on 2026-05-26 — awaiting tagged release

https://github.com/angular/domino/pull/29
github Patch Available

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in @angular/platform-server · Advisory · angular/angular · GitHub

https://github.com/angular/angular/security/advisories/GHSA-hqr9-c56f-3x7f

Vendor Advisories for CVE-2026-50555(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
npm(1)
PackageVulnerable rangeFixed inDependents
@angular/platform-server———

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 39× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-07 02:50 UTCEG score recompute
  2. 2026-07-06 16:27 UTCEPSS rescore
  3. 2026-07-06 02:23 UTCEPSS rescore
  4. 2026-07-06 02:02 UTCEG score recompute
  5. 2026-07-05 02:30 UTCEPSS rescore
  6. 2026-07-05 01:47 UTCEG score recompute
  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-04 01:00 UTCEG score recompute
  9. 2026-07-03 00:25 UTCEG score recompute
  10. 2026-07-02 00:10 UTCEG score recompute
  11. 2026-07-01 15:07 UTCEPSS rescore
  12. 2026-06-30 23:56 UTCEG score recompute
  13. 2026-06-30 23:22 UTCEPSS rescore
  14. 2026-06-29 23:38 UTCEG score recompute
  15. 2026-06-29 14:06 UTCEPSS rescore
  16. 2026-06-29 14:06 UTCEPSS rescore
  17. 2026-06-28 23:25 UTCEG score recompute
  18. 2026-06-28 14:07 UTCEPSS rescore
  19. 2026-06-28 04:56 UTCEPSS rescore
  20. 2026-06-28 04:56 UTCEPSS rescore
  21. 2026-06-27 23:11 UTCEG score recompute
  22. 2026-06-27 03:08 UTCEPSS rescore
  23. 2026-06-26 22:52 UTCEG score recompute▼ 2.50
  24. 2026-06-26 19:41 UTCNVD updateCVSS v3 → 6.1 · severity → MEDIUM
  25. 2026-06-26 11:58 UTCEG score recompute
Show 14 more
  1. 2026-06-25 23:44 UTCEG score recompute
  2. 2026-06-25 13:49 UTCEPSS rescore
  3. 2026-06-25 12:53 UTCEG score recompute
  4. 2026-06-25 02:02 UTCEG score recompute
  5. 2026-06-24 15:11 UTCEG score recompute
  6. 2026-06-24 14:05 UTCEPSS rescore
  7. 2026-06-24 04:20 UTCEG score recompute
  8. 2026-06-23 21:33 UTCEPSS rescore
  9. 2026-06-23 21:33 UTCEPSS rescore
  10. 2026-06-23 17:29 UTCEG score recompute
  11. 2026-06-23 06:38 UTCEG score recompute
  12. 2026-06-22 19:42 UTCEG score recompute▲ 8.60
  13. 2026-06-22 19:40 UTCNVD updateCVSS v3 → 8.6 · CVSS v4 → 8.6
  14. 2026-06-15 17:46 UTCEG score recompute

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-50555?
CVE-2026-50555 is a medium vulnerability published on June 15, 2026. 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, 21.2.16, 20.3.24, and 19.2.25, a Cross-Site Scripting (XSS) vulnerability exists in @angular/platform-server's DOM emulation dependency (domino)…
When was CVE-2026-50555 disclosed?
CVE-2026-50555 was first published in the National Vulnerability Database on June 15, 2026, with the most recent update on June 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50555 actively exploited?
CVE-2026-50555 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-50555?
CVE-2026-50555 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-50555?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50555, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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