CVE-2026-57211

CRITICALNVD 10.010.0
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This critical-severity CVE scores 10.0 under NVD CVSS v3. EPSS exploit probability: 0.6% (50th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, NVD CVSS v3
Trending — 3 sources updated this weekElevated

Also known asEUVD-2026-43016 (ENISA EUVD)Source: ENISA EUVD

10.0EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 10.0Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

RabbitMQ is a messaging and streaming broker. Prior to 4.1.11 and 4.2.6 on Windows, the RabbitMQ management plugin static file handler rabbit_mgmt_wm_static can pass URL-encoded backslashes to erl_prim_loader:read_file_info before path validation when multiple management extension plugins are enabled, causing outbound DNS and SMB requests to attacker-controlled UNC paths. This issue is fixed in versions 4.1.11 and 4.2.6.

CVSS v3
10.0
EG Score
10.0CRITICALmedium confidence
EG Risk
61
EG Risk 61/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity100% × 45%
Impact severity (EG Severity): CVSS 10.0 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.6%
EPSS %ILE
50th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (10.0): severity, escalated by confirmed exploitation. This CVE's 10.0 is its impact severity (EG Severity), not escalated.

EG Severity
10.0 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 10, 2026

Last Modified

October 25, 2026

Advisory Details (5)

Auto-updated Nov 1, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_pr, github_release, github.
GitHub advisoryMentions a patch (unverified)🟡 PoC Available

UNC SSRF affecting RabbitMQ management UI on Windows · Advisory · rabbitmq/rabbitmq-server · GitHub

https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-7v84-m3g5-vxq6
GitHub release Patch Available

RabbitMQ 4.2.6

Patch available: rabbitmq/rabbitmq-server v4.2.6

https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
GitHub pull request

Management plugin: apply path filtering earlier

Fix merged in rabbitmq/rabbitmq-server PR #15803 on 2026-03-23 — awaiting tagged release

https://github.com/rabbitmq/rabbitmq-server/pull/15803
GitHub commit

commit 6730797f6a34 (rabbitmq/rabbitmq-server)

Fix landed in rabbitmq/rabbitmq-server commit 6730797f6a34 — awaiting tagged release

https://github.com/rabbitmq/rabbitmq-server/commit/6730797f6a34b4e8308cea60adf1243857e70204
GitHub commit

commit 39c3a8e9c71d (rabbitmq/rabbitmq-server)

Fix landed in rabbitmq/rabbitmq-server commit 39c3a8e9c71d — awaiting tagged release

https://github.com/rabbitmq/rabbitmq-server/commit/39c3a8e9c71da0403d8dfc13f700e60c936e3682

Vendor Advisories for CVE-2026-57211(3)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatrabbitmq-server4-3-main-4.3.2-1.hum12026-07-06redhat
redhatrabbitmq-server4-2-main-4.2.8-1.hum12026-07-06redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 21× in last 7d / 78× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 100 of 404 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 304 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:45 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  2. 2026-11-01 22:13 UTCEG score recompute
  3. 2026-11-01 22:13 UTCVendor advisory
  4. 2026-11-01 16:34 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  5. 2026-11-01 00:28 UTCEG score recompute
  6. 2026-11-01 00:28 UTCVendor advisory
  7. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  8. 2026-10-31 02:46 UTCEG score recompute
  9. 2026-10-31 02:46 UTCVendor advisory
  10. 2026-10-30 16:34 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  11. 2026-10-30 05:02 UTCEG score recompute
  12. 2026-10-30 05:02 UTCVendor advisory
  13. 2026-10-29 16:33 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  14. 2026-10-29 07:19 UTCEG score recompute
  15. 2026-10-29 07:19 UTCVendor advisory
  16. 2026-10-28 16:32 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  17. 2026-10-28 09:37 UTCEG score recompute
  18. 2026-10-28 09:37 UTCVendor advisory
  19. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.6% · 50th percentile
  20. 2026-10-27 11:04 UTCEG score recompute
  21. 2026-10-27 11:04 UTCVendor advisory
  22. 2026-10-26 16:31 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  23. 2026-10-26 13:21 UTCEG score recompute
  24. 2026-10-26 13:21 UTCVendor advisory
  25. 2026-10-25 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
Show 75 more
  1. 2026-10-25 15:26 UTCVendor advisory
  2. 2026-10-25 14:17 UTCEG score recompute
  3. 2026-10-24 18:34 UTCEG score recompute
  4. 2026-10-24 18:34 UTCVendor advisory
  5. 2026-10-24 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  6. 2026-10-23 20:49 UTCEG score recompute
  7. 2026-10-23 20:49 UTCVendor advisory
  8. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  9. 2026-10-22 23:01 UTCEG score recompute
  10. 2026-10-22 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  11. 2026-10-22 01:17 UTCEG score recompute
  12. 2026-10-22 01:17 UTCVendor advisory
  13. 2026-10-21 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  14. 2026-10-21 03:20 UTCEG score recompute
  15. 2026-10-21 03:20 UTCVendor advisory
  16. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  17. 2026-10-20 05:23 UTCEG score recompute
  18. 2026-10-20 05:23 UTCVendor advisory
  19. 2026-10-19 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  20. 2026-10-19 06:46 UTCEG score recompute
  21. 2026-10-19 06:46 UTCVendor advisory
  22. 2026-10-18 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  23. 2026-10-18 08:58 UTCVendor advisory
  24. 2026-10-18 03:29 UTCEG score recompute
  25. 2026-10-17 16:34 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  26. 2026-10-17 10:28 UTCEG score recompute
  27. 2026-10-17 10:28 UTCVendor advisory
  28. 2026-10-16 16:42 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  29. 2026-10-16 12:20 UTCEG score recompute
  30. 2026-10-16 12:20 UTCVendor advisory
  31. 2026-10-15 16:32 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  32. 2026-10-15 13:56 UTCEG score recompute
  33. 2026-10-15 13:56 UTCVendor advisory
  34. 2026-10-14 16:33 UTCEPSS rescoreEPSS 0.6% · 49th percentile
  35. 2026-10-14 08:48 UTCEG score recompute
  36. 2026-10-14 08:48 UTCVendor advisory
  37. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  38. 2026-10-13 04:31 UTCEG score recompute
  39. 2026-10-13 04:31 UTCVendor advisory
  40. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  41. 2026-10-12 15:54 UTCEG score recompute
  42. 2026-10-12 06:46 UTCVendor advisory
  43. 2026-10-11 19:37 UTCEG score recompute
  44. 2026-10-11 16:52 UTCEG score recompute
  45. 2026-10-11 14:15 UTCEG score recompute
  46. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  47. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  48. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  49. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  50. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  51. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  52. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  53. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  54. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  55. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  56. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  57. 2026-10-01 14:58 UTCEG score recompute
  58. 2026-10-01 14:58 UTCVendor advisory
  59. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  60. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  61. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  62. 2026-09-28 09:46 UTCEG score recompute
  63. 2026-09-28 09:46 UTCVendor advisory
  64. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  65. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  66. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  67. 2026-09-24 11:09 UTCEG score recompute
  68. 2026-09-24 11:09 UTCVendor advisory
  69. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  70. 2026-09-23 10:06 UTCVendor advisory
  71. 2026-09-23 05:44 UTCEG score recompute
  72. 2026-09-23 05:44 UTCVendor advisory
  73. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  74. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  75. 2026-09-18 10:08 UTCVendor advisory

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-57211?
CVE-2026-57211 is a critical-severity vulnerability; its CVE record was published on July 10, 2026. RabbitMQ is a messaging and streaming broker. Prior to 4.1.11 and 4.2.6 on Windows, the RabbitMQ management plugin static file handler rabbit_mgmt_wm_static can pass URL-encoded backslashes to erl_prim_loader:read_file_info before path validation when multiple management extension plugins are…
When was the CVE record for CVE-2026-57211 published?
The CVE record for CVE-2026-57211 was published on July 10, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of October 25, 2026; the record at its source may have been updated since.
Is CVE-2026-57211 actively exploited?
CVE-2026-57211 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (50th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-57211?
CVE-2026-57211 has a CVSS v3 base score of 10.0 (NVD).
How do I remediate CVE-2026-57211?
A fix for CVE-2026-57211 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-57211 are linked in the Vendor Advisories panel on this page.

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