CVE-2026-50623

MEDIUMPre-NVD 4.86.5▲
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2026-06-12. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 4.8; sources differ by 1.7.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
4.8
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.8Exploit: NoneExposed: 0

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

An authentication bypass vulnerability exists in the OAuth2 TokenIntrospectionService in Apache CXF. Due to a missing 'throw' keyword in the security context check, the introspection endpoint (/services/oauth2/introspect) can be accessed by any unauthenticated network attacker. However note that this is a safeguard only in the case that someone forgot to enable authentication on the service. Users are recommended to upgrade to version 4.2.2 or 4.1.7, which fixes this issue.

CVSS v3
4.8
EG Score
6.5(medium)
EPSS
29.1%
KEV
Not listed

Published

June 12, 2026

Last Modified

June 16, 2026

Advisory Details (2)

Auto-updated Jun 12, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-50623: Apache CXF: Authentication Bypass in OAuth2 TokenIntrospectionService

http://www.openwall.com/lists/oss-security/2026/06/11/3
generic
https://lists.apache.org/thread/ydzj8m5mqmjy13xgyj9mkk9hfff63qq7

Vendor Advisories for CVE-2026-50623(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 22× in last 7d / 84× 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 01:18 UTCEG score recompute
  2. 2026-07-07 01:18 UTCGHSA enrichment
  3. 2026-07-06 16:27 UTCEPSS rescore
  4. 2026-07-06 02:23 UTCEPSS rescore
  5. 2026-07-05 21:38 UTCEG score recompute
  6. 2026-07-05 21:38 UTCGHSA enrichment
  7. 2026-07-05 02:30 UTCEPSS rescore
  8. 2026-07-04 23:32 UTCEG score recompute
  9. 2026-07-04 23:32 UTCGHSA enrichment
  10. 2026-07-04 06:31 UTCEPSS rescore
  11. 2026-07-04 01:25 UTCEG score recompute
  12. 2026-07-04 01:25 UTCGHSA enrichment
  13. 2026-07-03 02:49 UTCEG score recompute
  14. 2026-07-03 02:49 UTCGHSA enrichment
  15. 2026-07-02 04:46 UTCEG score recompute
  16. 2026-07-02 04:46 UTCGHSA enrichment
  17. 2026-07-01 15:07 UTCEPSS rescore
  18. 2026-07-01 06:53 UTCEG score recompute
  19. 2026-07-01 06:53 UTCGHSA enrichment
  20. 2026-06-30 23:22 UTCEPSS rescore
  21. 2026-06-30 08:59 UTCEG score recompute
  22. 2026-06-30 08:59 UTCGHSA enrichment
  23. 2026-06-29 11:05 UTCEG score recompute
  24. 2026-06-29 11:05 UTCGHSA enrichment
  25. 2026-06-28 14:07 UTCEPSS rescore
Show 59 more
  1. 2026-06-28 13:12 UTCEG score recompute
  2. 2026-06-28 13:12 UTCGHSA enrichment
  3. 2026-06-28 04:56 UTCEPSS rescore
  4. 2026-06-28 04:56 UTCEPSS rescore
  5. 2026-06-27 15:19 UTCEG score recompute
  6. 2026-06-27 15:19 UTCGHSA enrichment
  7. 2026-06-27 03:08 UTCEPSS rescore
  8. 2026-06-26 17:25 UTCEG score recompute
  9. 2026-06-26 17:25 UTCGHSA enrichment
  10. 2026-06-25 19:32 UTCEG score recompute
  11. 2026-06-25 19:32 UTCGHSA enrichment
  12. 2026-06-25 13:49 UTCEPSS rescore
  13. 2026-06-24 21:38 UTCEG score recompute
  14. 2026-06-24 21:38 UTCGHSA enrichment
  15. 2026-06-24 14:05 UTCEPSS rescore
  16. 2026-06-23 23:45 UTCEG score recompute
  17. 2026-06-23 23:45 UTCGHSA enrichment
  18. 2026-06-23 21:33 UTCEPSS rescore
  19. 2026-06-23 21:33 UTCEPSS rescore
  20. 2026-06-23 01:49 UTCEG score recompute
  21. 2026-06-23 01:49 UTCGHSA enrichment
  22. 2026-06-22 14:25 UTCEPSS rescore
  23. 2026-06-22 14:25 UTCEPSS rescore
  24. 2026-06-22 03:55 UTCEG score recompute
  25. 2026-06-22 03:55 UTCGHSA enrichment
  26. 2026-06-21 14:56 UTCEPSS rescore
  27. 2026-06-21 14:56 UTCEPSS rescore
  28. 2026-06-21 05:02 UTCEG score recompute
  29. 2026-06-21 05:02 UTCGHSA enrichment
  30. 2026-06-21 01:59 UTCEPSS rescore
  31. 2026-06-21 01:59 UTCEPSS rescore
  32. 2026-06-20 07:08 UTCEG score recompute
  33. 2026-06-20 07:08 UTCGHSA enrichment
  34. 2026-06-19 19:26 UTCEPSS rescore
  35. 2026-06-19 19:26 UTCEPSS rescore
  36. 2026-06-19 09:00 UTCEG score recompute
  37. 2026-06-19 09:00 UTCGHSA enrichment
  38. 2026-06-18 17:52 UTCEPSS rescore
  39. 2026-06-18 17:52 UTCEPSS rescore
  40. 2026-06-18 10:51 UTCEG score recompute
  41. 2026-06-18 10:51 UTCGHSA enrichment
  42. 2026-06-17 17:53 UTCEPSS rescore
  43. 2026-06-17 12:55 UTCEG score recompute
  44. 2026-06-17 12:55 UTCGHSA enrichment
  45. 2026-06-16 17:53 UTCEPSS rescore
  46. 2026-06-16 15:47 UTCNVD updateCVSS v3 → 4.8
  47. 2026-06-16 15:00 UTCEG score recompute
  48. 2026-06-16 15:00 UTCGHSA enrichment
  49. 2026-06-15 17:49 UTCEPSS rescore
  50. 2026-06-15 17:49 UTCEPSS rescore
  51. 2026-06-15 17:07 UTCEG score recompute▲ 6.50
  52. 2026-06-15 17:07 UTCGHSA enrichment
  53. 2026-06-14 23:18 UTCEPSS rescore
  54. 2026-06-13 23:00 UTCEPSS rescore
  55. 2026-06-12 23:12 UTCEPSS rescore
  56. 2026-06-12 23:12 UTCEPSS rescore
  57. 2026-06-12 18:12 UTCNVD updateCVSS v3 → 6.5 · severity → MEDIUM
  58. 2026-06-12 12:11 UTCEG score recompute
  59. 2026-06-12 12:11 UTCNVD updatefirst tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-50623?
CVE-2026-50623 is a medium vulnerability published on June 12, 2026. An authentication bypass vulnerability exists in the OAuth2 TokenIntrospectionService in Apache CXF. Due to a missing 'throw' keyword in the security context check, the introspection endpoint (/services/oauth2/introspect) can be accessed by any unauthenticated network attacker. However note that…
When was CVE-2026-50623 disclosed?
CVE-2026-50623 was first published in the National Vulnerability Database on June 12, 2026, with the most recent update on June 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50623 actively exploited?
CVE-2026-50623 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 29.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-50623?
CVE-2026-50623 has a CVSS v3.1 base score of 4.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 6.5.
How do I remediate CVE-2026-50623?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50623, 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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