CVE-2026-49877

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-30. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.1Exploit: None knownExposed: 0

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

Improper Authorization vulnerability in Apache ActiveMQ.

An authenticated low-privilege Web Console user by default can access /admin/* paths in the Web Console. The default Jetty settings incorrectly did not limit those paths to only admins. This issue affects Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7.

Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity81% × 45%
Exploitation1% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

June 30, 2026

Last Modified

July 2, 2026

Advisory Details (2)

Auto-updated Jun 30, 2026
No patch confirmed yet.
generic

oss-security - CVE-2026-49877: Apache ActiveMQ: Authenticated web users retain admin access by default in the Web Console

http://www.openwall.com/lists/oss-security/2026/06/29/9
generic
https://lists.apache.org/thread/w82vtc3q02j5ot94tnyy1197y3wb98hl

Vendor Advisories for CVE-2026-49877(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
activemq5.16.1-1 ... 5.17.6+dfsg-2 (8 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
activemq5.17.2+dfsg-2, 5.17.2+dfsg-2+deb12u1, 5.17.6+dfsg-1, 5.17.6+dfsg-2——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
activemq5.17.6+dfsg-2——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 65× 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 188 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-49877?
CVE-2026-49877 is a high vulnerability published on June 30, 2026. Improper Authorization vulnerability in Apache ActiveMQ. An authenticated low-privilege Web Console user by default can access /admin/* paths in the Web Console. The default Jetty settings incorrectly did not limit those paths to only admins. This issue affects Apache ActiveMQ: before 5.19.8, from…
When was CVE-2026-49877 disclosed?
CVE-2026-49877 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-2026-49877 actively exploited?
CVE-2026-49877 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.9% of all scored CVEs.
What is the CVSS score of CVE-2026-49877?
CVE-2026-49877 has a CVSS v3.1 base score of 8.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-49877?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-49877, 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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