CVE-2025-46556

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4% (35th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 6.5 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2025-11-03) is not newer than that change (2026-10-19), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week

Also known asEUVD-2025-37509 (ENISA EUVD) · GHSA-r3jf-hm7q-qfw5 (GitHub Security Advisories)Source: ENISA EUVD

7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.27.1 and below allow attackers to permanently corrupt issue activity logs by submitting extremely long notes (tested with 4,788,761 characters) due to a lack of server-side validation of note length. Once such a note is added, the activity stream UI fails to render; therefore, new notes cannot be displayed, effectively breaking all future collaboration on the issue. This issue is fixed in version 2.27.2.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
34
EG Risk 34/100

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)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.4% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at every mission impact level.
Exploitation none (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
0.4%
EPSS %ILE
35th
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 (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.4% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). 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 every mission impact level.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 every mission impact level.

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

Exploitation none (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

November 4, 2025

Last Modified

October 19, 2026

Advisory Details (4)

Auto-updated Oct 19, 2026
Patch available. Sources: github_commit, github.
GitHub advisoryMentions a patch (unverified)

Denial-of-Service (DoS) via Excessive Note Length in MantisBT · Advisory · mantisbt/mantisbt · GitHub

https://github.com/mantisbt/mantisbt/security/advisories/GHSA-r3jf-hm7q-qfw5
GitHub commit

commit e9119c68b4a0 (mantisbt/mantisbt)

Fix landed in mantisbt/mantisbt commit e9119c68b4a0 — awaiting tagged release

https://github.com/mantisbt/mantisbt/commit/e9119c68b4a0eaa0bbde3deb121e81f5f7157361
GitHub commit

commit d5cec6bffb44 (mantisbt/mantisbt)

Fix landed in mantisbt/mantisbt commit d5cec6bffb44 — awaiting tagged release

https://github.com/mantisbt/mantisbt/commit/d5cec6bffb44d54bd412c186b9baa409b1aa4238
GitHub commit

commit c99a41272532 (mantisbt/mantisbt)

Fix landed in mantisbt/mantisbt commit c99a41272532 — awaiting tagged release

https://github.com/mantisbt/mantisbt/commit/c99a41272532ba49b5c8dccb7797afead9864234

Patch Availability(1)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
composermantisbt/mantisbt @ 2.27.2 (fixes < 2.27.2)—ghsa

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.

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFix by version rangeDependents
mantisbt/mantisbt2.10.0 ... 2.9.1 (72 versions)
  • every version up to 2.27.2: fixed in 2.27.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 41× 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 95 of 205 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. 5 repeat rows among the latest 100 are merged into the row they repeat. The 110 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:43 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  2. 2026-11-01 16:33 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  3. 2026-11-01 08:06 UTCGHSA enrichmentGHSA-r3jf-hm7q-qfw5 · GitHub severity MODERATE · GitHub CVSS 6.5
  4. 2026-11-01 08:06 UTCEG score recompute
  5. 2026-10-31 16:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  6. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  7. 2026-10-29 16:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  8. 2026-10-28 16:30 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  9. 2026-10-27 17:32 UTCEG score recompute
  10. 2026-10-27 16:30 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  11. 2026-10-26 16:30 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  12. 2026-10-25 16:31 UTCEPSS rescoreEPSS 0.4% · 35th percentile
  13. 2026-10-25 16:23 UTCEG score recompute
  14. 2026-10-24 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  15. 2026-10-23 16:30 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  16. 2026-10-22 16:33 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  17. 2026-10-21 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  18. 2026-10-20 16:31 UTCEPSS rescoreEPSS 0.4% · 34th percentile
  19. 2026-10-19 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  20. 2026-10-19 13:28 UTCEG score recompute▲ 1.00
  21. 2026-10-19 13:25 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  22. 2026-10-18 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  23. 2026-10-18 05:31 UTCEG score recompute
  24. 2026-10-17 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  25. 2026-10-16 16:38 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
Show 70 more
  1. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  2. 2026-10-14 16:31 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  3. 2026-10-13 16:32 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  4. 2026-10-12 17:03 UTCEG score recompute
  5. 2026-10-12 16:33 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  6. 2026-10-11 20:36 UTCEG score recompute
  7. 2026-10-11 18:47 UTCEG score recompute
  8. 2026-10-11 15:23 UTCEG score recompute
  9. 2026-10-11 13:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  10. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  11. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  12. 2026-10-08 17:10 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  13. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  14. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  15. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.4% · 33rd percentile
  16. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  17. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.4% · 30th percentile
  18. 2026-10-02 01:41 UTCOSV refresh
  19. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  20. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  21. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  22. 2026-09-27 13:45 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  23. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  24. 2026-09-26 00:25 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  25. 2026-09-24 14:02 UTCEPSS rescoreEPSS 0.4% · 29th percentile
  26. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  27. 2026-09-21 21:06 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  28. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  29. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  30. 2026-09-17 19:29 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  31. 2026-09-16 14:07 UTCEPSS rescoreEPSS 0.4% · 32nd percentile
  32. 2026-09-15 03:09 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  33. 2026-09-12 19:06 UTCOSV refresh
  34. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  35. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  36. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  37. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  38. 2026-09-08 21:59 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  39. 2026-09-07 16:00 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  40. 2026-09-06 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  41. 2026-09-05 15:28 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  42. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  43. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  44. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  45. 2026-08-30 19:16 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  46. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  47. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  48. 2026-08-27 14:24 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  49. 2026-08-26 14:45 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  50. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  51. 2026-08-25 00:50 UTCOSV refresh
  52. 2026-08-24 14:16 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  53. 2026-08-24 09:22 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  54. 2026-08-23 00:18 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  55. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  56. 2026-08-20 22:54 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  57. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  58. 2026-08-18 13:47 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  59. 2026-08-17 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  60. 2026-08-16 14:55 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  61. 2026-08-16 02:13 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  62. 2026-08-15 01:29 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  63. 2026-08-13 21:59 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  64. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  65. 2026-08-11 13:41 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  66. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  67. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  68. 2026-08-08 17:55 UTCOSV refresh
  69. 2026-08-08 16:36 UTCEPSS rescoreEPSS 0.4% · 31st percentile
  70. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.4% · 31st percentile

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Frequently asked(5)

What is CVE-2025-46556?
CVE-2025-46556 is a high-severity vulnerability; its CVE record was published on November 4, 2025. Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.27.1 and below allow attackers to permanently corrupt issue activity logs by submitting extremely long notes (tested with 4,788,761 characters) due to a lack of server-side validation of note length. Once such a note is…
When was the CVE record for CVE-2025-46556 published?
The CVE record for CVE-2025-46556 was published on November 4, 2025. 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 19, 2026; the record at its source may have been updated since.
Is CVE-2025-46556 actively exploited?
CVE-2025-46556 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (35th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-46556?
CVE-2025-46556 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2025-46556?
A fix for CVE-2025-46556 is available: update to the fixed version the vendor names in its advisory.

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