CVE-2026-53561

HIGHPre-NVD 7.47.4—
EchelonGraph scoreMEDIUM confidence

Score 7.4 from GitHub Security Advisory (severity: HIGH) published 2026-08-25. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
7.4EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 7.4Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

An improper authentication vulnerability in HiveServer2 SAML bearer-token validation in Apache Hive 4.0.0 through 4.2.0 (and later unreleased branches) on deployments using HTTP transport with hive.server2.authentication=SAML allows an unauthenticated network attacker to authenticate as an arbitrary Hive user and obtain an authenticated HiveServer2 session via a forged Authorization: Bearer token sent to the /cliservice HTTP endpoint. Users are recommended to upgrade to 4.2.1 version that includes the fix for this issue.

Access / authorization required: No Hive credentials, SAML IdP login, or knowledge of the server signing secret is required. The attacker only needs network reachability to the HiveServer2 HTTP port (typically /cliservice), directly or through a reverse proxy such as Apache Knox that forwards unauthenticated requests to HS2. The instance must have SAML authentication enabled in HTTP mode. Deployments where Knox handles SSO and HiveServer2 uses LDAP/Kerberos (not native SAML mode) are not affected by this specific issue.

CVSS v3
7.4
EG Score
7.4HIGHmedium confidence
EG Risk
33
EG Risk 33/100CISA SSVC

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
Severity74% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.3%
EPSS %ILE
25th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 25, 2026

Last Modified

September 28, 2026

Advisory Details (4)

Auto-updated Aug 26, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic
https://lists.apache.org/thread/6d56mk501fp4f8cb5wvrpj2jwd9knt05
github_commit

commit 6ca06ca1104f (apache/hive)

Fix landed in apache/hive commit 6ca06ca1104f — awaiting tagged release

https://github.com/apache/hive/commit/6ca06ca1104ff7462363087a867d70d546134774
generic

[HIVE-29653] Unauthenticated authentication bypass in HiveServer2 HTTP SAML bearer-token validation allows impersonation of any Hive user. - ASF Jira

https://issues.apache.org/jira/browse/HIVE-29653
generic

GitHub - apache/hive: Apache Hive · GitHub

https://github.com/apache/hive

Vendor Advisories for CVE-2026-53561(1)

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

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 23× in last 7d / 101× 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.

Showing the most recent 100 of 162 total refreshes for this CVE.

  1. 2026-10-10 12:18 UTCEG score recompute
  2. 2026-10-10 12:18 UTCGHSA enrichment
  3. 2026-10-09 20:07 UTCEPSS rescore
  4. 2026-10-09 04:31 UTCEG score recompute
  5. 2026-10-09 04:31 UTCGHSA enrichment
  6. 2026-10-08 17:12 UTCEPSS rescore
  7. 2026-10-08 03:34 UTCEG score recompute
  8. 2026-10-08 03:34 UTCGHSA enrichment
  9. 2026-10-07 23:48 UTCEPSS rescore
  10. 2026-10-07 05:15 UTCGHSA enrichment
  11. 2026-10-06 16:09 UTCEG score recompute
  12. 2026-10-06 16:09 UTCGHSA enrichment
  13. 2026-10-06 15:18 UTCEPSS rescore
  14. 2026-10-06 02:38 UTCEG score recompute
  15. 2026-10-06 02:38 UTCGHSA enrichment
  16. 2026-10-05 17:43 UTCEPSS rescore
  17. 2026-10-05 09:18 UTCEG score recompute
  18. 2026-10-05 09:17 UTCGHSA enrichment
  19. 2026-10-04 23:22 UTCEPSS rescore
  20. 2026-10-04 19:51 UTCGHSA enrichment
  21. 2026-10-04 05:33 UTCGHSA enrichment
  22. 2026-10-03 16:27 UTCEG score recompute
  23. 2026-10-03 16:27 UTCGHSA enrichment
  24. 2026-10-03 14:26 UTCEPSS rescore
  25. 2026-10-03 01:58 UTCEG score recompute
Show 75 more
  1. 2026-10-03 01:58 UTCGHSA enrichment
  2. 2026-10-02 17:56 UTCEPSS rescore
  3. 2026-10-02 12:53 UTCGHSA enrichment
  4. 2026-10-01 22:42 UTCEG score recompute
  5. 2026-10-01 22:42 UTCGHSA enrichment
  6. 2026-10-01 19:50 UTCEPSS rescore
  7. 2026-10-01 09:21 UTCGHSA enrichment
  8. 2026-09-30 20:16 UTCEG score recompute
  9. 2026-09-30 20:16 UTCGHSA enrichment
  10. 2026-09-30 15:03 UTCEPSS rescore
  11. 2026-09-30 06:51 UTCEG score recompute
  12. 2026-09-30 06:51 UTCGHSA enrichment
  13. 2026-09-29 15:22 UTCEPSS rescore
  14. 2026-09-29 14:38 UTCGHSA enrichment
  15. 2026-09-28 23:17 UTCEG score recompute
  16. 2026-09-28 23:17 UTCGHSA enrichment
  17. 2026-09-28 14:11 UTCEG score recompute
  18. 2026-09-28 14:11 UTCGHSA enrichment
  19. 2026-09-28 13:51 UTCEPSS rescore
  20. 2026-09-28 01:05 UTCEG score recompute
  21. 2026-09-28 01:05 UTCGHSA enrichment
  22. 2026-09-27 13:48 UTCEPSS rescore
  23. 2026-09-27 11:59 UTCGHSA enrichment
  24. 2026-09-26 22:08 UTCEG score recompute
  25. 2026-09-26 22:08 UTCGHSA enrichment
  26. 2026-09-26 15:59 UTCEPSS rescore
  27. 2026-09-25 13:58 UTCGHSA enrichment
  28. 2026-09-25 00:23 UTCEG score recompute
  29. 2026-09-25 00:23 UTCGHSA enrichment
  30. 2026-09-24 14:04 UTCEPSS rescore
  31. 2026-09-24 10:50 UTCGHSA enrichment
  32. 2026-09-23 21:45 UTCEG score recompute
  33. 2026-09-23 21:45 UTCGHSA enrichment
  34. 2026-09-23 17:54 UTCEPSS rescore
  35. 2026-09-23 08:40 UTCGHSA enrichment
  36. 2026-09-22 19:34 UTCEG score recompute
  37. 2026-09-22 19:34 UTCGHSA enrichment
  38. 2026-09-22 06:29 UTCEG score recompute
  39. 2026-09-22 06:28 UTCGHSA enrichment
  40. 2026-09-21 17:23 UTCGHSA enrichment
  41. 2026-09-21 04:12 UTCEG score recompute
  42. 2026-09-21 04:12 UTCGHSA enrichment
  43. 2026-09-20 20:16 UTCEPSS rescore
  44. 2026-09-20 15:07 UTCGHSA enrichment
  45. 2026-09-20 02:01 UTCEG score recompute
  46. 2026-09-20 02:01 UTCGHSA enrichment
  47. 2026-09-19 12:56 UTCGHSA enrichment
  48. 2026-09-18 23:50 UTCEG score recompute
  49. 2026-09-18 23:50 UTCGHSA enrichment
  50. 2026-09-18 19:28 UTCEPSS rescore
  51. 2026-09-18 10:45 UTCGHSA enrichment
  52. 2026-09-17 21:40 UTCEG score recompute
  53. 2026-09-17 21:39 UTCGHSA enrichment
  54. 2026-09-17 08:33 UTCGHSA enrichment
  55. 2026-09-16 19:27 UTCEG score recompute
  56. 2026-09-16 19:27 UTCGHSA enrichment
  57. 2026-09-16 14:08 UTCEPSS rescore
  58. 2026-09-16 05:15 UTCEPSS rescore
  59. 2026-09-16 03:29 UTCGHSA enrichment
  60. 2026-09-15 14:24 UTCEG score recompute
  61. 2026-09-15 14:24 UTCGHSA enrichment
  62. 2026-09-15 01:18 UTCGHSA enrichment
  63. 2026-09-14 12:13 UTCGHSA enrichment
  64. 2026-09-13 23:06 UTCEG score recompute
  65. 2026-09-13 23:06 UTCGHSA enrichment
  66. 2026-09-13 16:47 UTCEPSS rescore
  67. 2026-09-13 10:01 UTCGHSA enrichment
  68. 2026-09-12 20:56 UTCEG score recompute
  69. 2026-09-12 20:56 UTCGHSA enrichment
  70. 2026-09-12 07:50 UTCGHSA enrichment
  71. 2026-09-11 18:45 UTCEG score recompute
  72. 2026-09-11 18:45 UTCGHSA enrichment
  73. 2026-09-11 14:53 UTCEPSS rescore
  74. 2026-09-11 05:39 UTCGHSA enrichment
  75. 2026-09-10 16:32 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-53561?
CVE-2026-53561 is a high vulnerability published on August 25, 2026. An improper authentication vulnerability in HiveServer2 SAML bearer-token validation in Apache Hive 4.0.0 through 4.2.0 (and later unreleased branches) on deployments using HTTP transport with hive.server2.authentication=SAML allows an unauthenticated network attacker to authenticate as an…
When was CVE-2026-53561 disclosed?
CVE-2026-53561 was first published on August 25, 2026, with the most recent update on September 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53561 actively exploited?
CVE-2026-53561 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-53561?
CVE-2026-53561 has a CVSS v3.1 base score of 7.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-53561?
An upstream fix for CVE-2026-53561 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-53561 are linked in the Vendor Advisories panel on this page.

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