CVE-2026-55221

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 81% 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
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.5Exploit: None knownExposed: 0

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

Boruta is a standalone authorization server that aims to implement OAuth 2.0 and Openid Connect up to decentralized identity specifications. Prior to version 0.10.0, Boruta logged sensitive OAuth and OpenID Connect values in business event logs. Logged values could include access tokens, refresh tokens, authorization codes, agent tokens, direct-post codes, ID tokens, VP tokens, and tokens submitted to introspection or revocation endpoints. An attacker with access to Boruta logs, log aggregation systems, or the administration log viewer could recover these credentials and use them until expiration or revocation. This issue has been patched in version 0.10.0.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
29(Track)
EG Risk 29/100SSVC: 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
Severity65% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

September 2, 2026

Last Modified

September 9, 2026

Advisory Details (3)

Auto-updated Sep 2, 2026
Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

[0.10.0] - 2026-06-12

Patch available: malach-it/boruta-server 0.10.0

https://github.com/malach-it/boruta-server/releases/tag/0.10.0
github_commit Patch Available

commit 5f8362aea39f (malach-it/boruta-server)

Patch available: malach-it/boruta-server 0.10.0 (contains commit 5f8362aea39f)

https://github.com/malach-it/boruta-server/commit/5f8362aea39fdc2c6d6cfe41c6519985f32ba9b5
github Patch Available

OAuth credentials exposed in Boruta business logs · Advisory · malach-it/boruta-server · GitHub

https://github.com/malach-it/boruta-server/security/advisories/GHSA-pqwf-v25h-4874

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 29× 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. 2026-09-20 02:08 UTCEG score recompute
  2. 2026-09-19 03:55 UTCEG score recompute
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 05:41 UTCEG score recompute
  5. 2026-09-17 19:31 UTCEPSS rescore
  6. 2026-09-17 07:28 UTCEG score recompute
  7. 2026-09-16 14:08 UTCEPSS rescore
  8. 2026-09-16 09:15 UTCEG score recompute
  9. 2026-09-16 05:15 UTCEPSS rescore
  10. 2026-09-15 11:01 UTCEG score recompute
  11. 2026-09-15 03:11 UTCEPSS rescore
  12. 2026-09-14 12:15 UTCEG score recompute
  13. 2026-09-13 16:47 UTCEPSS rescore
  14. 2026-09-12 15:49 UTCEG score recompute
  15. 2026-09-11 17:36 UTCEG score recompute
  16. 2026-09-11 14:53 UTCEPSS rescore
  17. 2026-09-10 19:23 UTCEG score recompute
  18. 2026-09-10 09:35 UTCEPSS rescore
  19. 2026-09-09 06:14 UTCEG score recompute
  20. 2026-09-08 22:01 UTCEPSS rescore
  21. 2026-09-07 09:48 UTCEG score recompute
  22. 2026-09-06 13:47 UTCEPSS rescore
  23. 2026-09-06 11:34 UTCEG score recompute
  24. 2026-09-04 15:08 UTCEG score recompute
  25. 2026-09-04 05:06 UTCEPSS rescore
Show 4 more
  1. 2026-09-02 18:36 UTCEG score recompute
  2. 2026-09-02 17:46 UTCEG score recompute
  3. 2026-09-02 17:36 UTCEG score recompute
  4. 2026-09-02 17:35 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55221?
CVE-2026-55221 is a medium vulnerability published on September 2, 2026. Boruta is a standalone authorization server that aims to implement OAuth 2.0 and Openid Connect up to decentralized identity specifications. Prior to version 0.10.0, Boruta logged sensitive OAuth and OpenID Connect values in business event logs. Logged values could include access tokens, refresh…
When was CVE-2026-55221 disclosed?
CVE-2026-55221 was first published in the National Vulnerability Database on September 2, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55221 actively exploited?
CVE-2026-55221 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 80.6% of all scored CVEs.
What is the CVSS score of CVE-2026-55221?
CVE-2026-55221 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-55221?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55221, 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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