CVE-2026-73478

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreHIGH confidence

Score 5.3 from GitHub Security Advisory published 2026-09-02. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.3Exploit: None knownExposed: 0

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

Incorrect Authorization vulnerability in Drupal Diff allows Forceful Browsing. This issue affects Diff versions: from 0.0.0 to 2.0.1, from 2.1.0 to 2.1.1.

CVSS v3
5.3
EG Score
5.3(high)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
21%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 16, 2026

Advisory Details (1)

Auto-updated Sep 2, 2026
No patch confirmed yet.
generic

Diff - Moderately critical - Access bypass - SA-CONTRIB-2026-096 | Drupal.org

https://www.drupal.org/sa-contrib-2026-096

Vendor Advisories for CVE-2026-73478(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)
Packagist:https://packages.drupal.org/8(1)
PackageVulnerable rangeFixed inDependents
drupal/diff—2.1.1—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 63× 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. 2026-09-25 06:23 UTCEG score recompute
  2. 2026-09-25 06:23 UTCGHSA enrichment
  3. 2026-09-24 05:00 UTCEG score recompute
  4. 2026-09-24 05:00 UTCGHSA enrichment
  5. 2026-09-23 17:54 UTCEPSS rescore
  6. 2026-09-23 03:37 UTCEG score recompute
  7. 2026-09-23 03:37 UTCGHSA enrichment
  8. 2026-09-22 02:14 UTCEG score recompute
  9. 2026-09-22 02:14 UTCGHSA enrichment
  10. 2026-09-21 21:09 UTCEPSS rescore
  11. 2026-09-21 00:47 UTCEG score recompute
  12. 2026-09-21 00:47 UTCGHSA enrichment
  13. 2026-09-20 20:16 UTCEPSS rescore
  14. 2026-09-19 23:24 UTCEG score recompute
  15. 2026-09-19 23:24 UTCGHSA enrichment
  16. 2026-09-18 22:01 UTCEG score recompute
  17. 2026-09-18 22:01 UTCGHSA enrichment
  18. 2026-09-18 19:28 UTCEPSS rescore
  19. 2026-09-17 20:38 UTCEG score recompute
  20. 2026-09-17 20:38 UTCGHSA enrichment
  21. 2026-09-16 16:56 UTCEG score recompute
  22. 2026-09-16 16:56 UTCGHSA enrichment
  23. 2026-09-16 14:08 UTCEPSS rescore
  24. 2026-09-16 14:01 UTCEG score recompute
  25. 2026-09-16 14:01 UTCGHSA enrichment
Show 38 more
  1. 2026-09-16 05:15 UTCEPSS rescore
  2. 2026-09-15 12:16 UTCEG score recompute
  3. 2026-09-15 12:16 UTCGHSA enrichment
  4. 2026-09-15 03:12 UTCEPSS rescore
  5. 2026-09-14 10:50 UTCEG score recompute
  6. 2026-09-14 10:50 UTCGHSA enrichment
  7. 2026-09-13 09:27 UTCEG score recompute
  8. 2026-09-13 09:27 UTCGHSA enrichment
  9. 2026-09-12 15:02 UTCEPSS rescore
  10. 2026-09-12 08:05 UTCEG score recompute
  11. 2026-09-12 08:05 UTCGHSA enrichment
  12. 2026-09-11 14:53 UTCEPSS rescore
  13. 2026-09-11 06:42 UTCEG score recompute
  14. 2026-09-11 06:42 UTCGHSA enrichment
  15. 2026-09-10 09:35 UTCEPSS rescore
  16. 2026-09-10 05:18 UTCGHSA enrichment
  17. 2026-09-09 03:55 UTCEG score recompute
  18. 2026-09-09 03:55 UTCGHSA enrichment
  19. 2026-09-08 22:01 UTCEPSS rescore
  20. 2026-09-08 02:32 UTCEG score recompute
  21. 2026-09-08 02:32 UTCGHSA enrichment
  22. 2026-09-07 01:09 UTCEG score recompute
  23. 2026-09-07 01:09 UTCGHSA enrichment
  24. 2026-09-06 13:48 UTCEPSS rescore
  25. 2026-09-05 23:44 UTCEG score recompute
  26. 2026-09-05 23:44 UTCGHSA enrichment
  27. 2026-09-04 22:20 UTCEG score recompute
  28. 2026-09-04 22:20 UTCGHSA enrichment
  29. 2026-09-04 05:07 UTCEPSS rescore
  30. 2026-09-03 20:56 UTCEG score recompute
  31. 2026-09-03 20:56 UTCGHSA enrichment
  32. 2026-09-02 19:32 UTCGHSA enrichment
  33. 2026-09-02 18:54 UTCEG score recompute▲ 5.30
  34. 2026-09-02 18:54 UTCGHSA enrichment
  35. 2026-09-02 18:50 UTCMITRE cvelistV5CVSS v3 → 5.3 · severity → MEDIUM
  36. 2026-09-02 13:25 UTCNVD update
  37. 2026-09-02 12:54 UTCEG score recompute
  38. 2026-09-02 12:53 UTCMITRE cvelistV5first tracked

Related CVEs(same product + same CWE)

Same product

1 shown

Packagist:https://packages.drupal.org/8:drupal/diff

Frequently asked(5)

What is CVE-2026-73478?
CVE-2026-73478 is a medium vulnerability published on September 2, 2026. Incorrect Authorization vulnerability in Drupal Diff allows Forceful Browsing. This issue affects Diff versions: from 0.0.0 to 2.0.1, from 2.1.0 to 2.1.1.
When was CVE-2026-73478 disclosed?
CVE-2026-73478 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-73478 actively exploited?
CVE-2026-73478 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 78.5% of all scored CVEs.
What is the CVSS score of CVE-2026-73478?
CVE-2026-73478 has a CVSS v3.1 base score of 5.3 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-73478?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-73478, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-73478

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