CVE-2026-54673

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 86% 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, secondary
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

electron-updater allows for automatic updates for Electron apps. Prior to 9.7.0, the HTTP redirect handler (HttpExecutor.prepareRedirectUrlOptions) only stripped a credential header whose key string matched exactly lowercase "authorization", exposing credentials. Other credential-bearing headers — most notably PRIVATE-TOKEN (used by GitLab's personal access token flow) and mixed-case Authorization (used by GitLab's Bearer/OAuth flow) — were not stripped and could be forwarded to an attacker-controlled cross-origin redirect destination. This issue has been fixed in version 9.7.0.

CVSS v3
8.2
EG Score
8.2(medium)
EPSS
14.3%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 2, 2026

Advisory Details (2)

Auto-updated Jul 1, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
github Patch Available🟡 PoC Available

Cross-origin redirect leaks `PRIVATE-TOKEN` and mixed-case `Authorization` credentials in `builder-util-runtime` · Advisory · electron-userland/electron-builder · GitHub

https://github.com/electron-userland/electron-builder/security/advisories/GHSA-p2f4-r6v6-j797
github_commit Patch Available

commit 22a7532bd01b (electron-userland/electron-builder)

Patch available: electron-userland/electron-builder [email protected] (contains commit 22a7532bd01b)

https://github.com/electron-userland/electron-builder/commit/22a7532bd01b9fb42cff7c58d599c7ad683569fe

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 53× 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. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 16:57 UTCEPSS rescore
  3. 2026-07-15 15:07 UTCEG score recompute
  4. 2026-07-15 03:29 UTCEG score recompute
  5. 2026-07-15 02:00 UTCEPSS rescore
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  7. 2026-07-14 15:50 UTCEG score recompute
  8. 2026-07-14 04:12 UTCEG score recompute
  9. 2026-07-13 22:31 UTCEPSS rescore
  10. 2026-07-13 16:34 UTCEG score recompute
  11. 2026-07-13 06:13 UTCEPSS rescore
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  13. 2026-07-13 04:47 UTCEG score recompute
  14. 2026-07-12 17:09 UTCEG score recompute
  15. 2026-07-12 05:46 UTCEPSS rescore
  16. 2026-07-12 05:30 UTCEG score recompute
  17. 2026-07-11 17:49 UTCEG score recompute
  18. 2026-07-11 08:27 UTCEPSS rescore
  19. 2026-07-11 08:27 UTCEPSS rescore
  20. 2026-07-11 06:11 UTCEG score recompute
  21. 2026-07-10 18:30 UTCEG score recompute
  22. 2026-07-10 06:52 UTCEG score recompute
  23. 2026-07-09 19:12 UTCEG score recompute
  24. 2026-07-09 19:10 UTCEPSS rescore
  25. 2026-07-09 19:10 UTCEPSS rescore
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  1. 2026-07-09 07:33 UTCEG score recompute
  2. 2026-07-08 19:54 UTCEG score recompute
  3. 2026-07-08 15:16 UTCEPSS rescore
  4. 2026-07-08 15:16 UTCEPSS rescore
  5. 2026-07-08 08:16 UTCEG score recompute
  6. 2026-07-07 20:38 UTCEG score recompute
  7. 2026-07-07 13:46 UTCEPSS rescore
  8. 2026-07-07 13:46 UTCEPSS rescore
  9. 2026-07-07 08:59 UTCEG score recompute
  10. 2026-07-06 21:14 UTCEG score recompute
  11. 2026-07-06 16:27 UTCEPSS rescore
  12. 2026-07-06 16:27 UTCEPSS rescore
  13. 2026-07-06 09:35 UTCEG score recompute
  14. 2026-07-06 02:23 UTCEPSS rescore
  15. 2026-07-06 02:23 UTCEPSS rescore
  16. 2026-07-05 21:56 UTCEG score recompute
  17. 2026-07-05 10:18 UTCEG score recompute
  18. 2026-07-04 22:40 UTCEG score recompute
  19. 2026-07-04 11:01 UTCEG score recompute
  20. 2026-07-03 23:22 UTCEG score recompute
  21. 2026-07-03 11:44 UTCEG score recompute
  22. 2026-07-02 23:54 UTCEG score recompute
  23. 2026-07-02 12:16 UTCEG score recompute
  24. 2026-07-02 00:38 UTCEG score recompute
  25. 2026-07-01 15:07 UTCEPSS rescore
  26. 2026-07-01 12:59 UTCEG score recompute
  27. 2026-07-01 01:20 UTCEG score recompute
  28. 2026-07-01 01:19 UTCNVD updatefirst tracked

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Frequently asked(5)

What is CVE-2026-54673?
CVE-2026-54673 is a high vulnerability published on June 30, 2026. electron-updater allows for automatic updates for Electron apps. Prior to 9.7.0, the HTTP redirect handler (HttpExecutor.prepareRedirectUrlOptions) only stripped a credential header whose key string matched exactly lowercase "authorization", exposing credentials. Other credential-bearing headers —…
When was CVE-2026-54673 disclosed?
CVE-2026-54673 was first published in the National Vulnerability Database on June 30, 2026, with the most recent update on July 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-54673 actively exploited?
CVE-2026-54673 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 14.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-54673?
CVE-2026-54673 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-54673?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-54673, 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.

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