CVE-2025-30358

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.1 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 54% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.7%CVSS: 8.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Mesop is a Python-based UI framework that allows users to build web applications. A class pollution vulnerability in Mesop prior to version 0.14.1 allows attackers to overwrite global variables and class attributes in certain Mesop modules during runtime. This vulnerability could directly lead to a denial of service (DoS) attack against the server. Additionally, it could also result in other severe consequences given the application's implementation, such as identity confusion, where an attacker could impersonate an assistant or system role within conversations. This impersonation could potentially enable jailbreak attacks when interacting with large language models (LLMs). Just like the Javascript's prototype pollution, this vulnerability could leave a way for attackers to manipulate the intended data-flow or control-flow of the application at runtime and lead to severe consequences like remote code execution when gadgets are available. Users should upgrade to version 0.14.1 to obtain a fix for the issue.

CVSS v3
8.1
EG Score
8.1HIGHmedium confidence
EG Risk
37
EG Risk 37/100

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%
Automatability0% × 15%
EPSS PROB
0.7%
EPSS %ILE
51st
KEV
Not listed

Published

March 27, 2025

Last Modified

April 15, 2026

Advisory Details (2)

Auto-updated Sep 17, 2026
Patch available. Sources: github_commit, github.
githubMentions a patch (unverified)

Class Pollution vulnerability found in Mesop application leading to DoS and Jailbreak attacks · Advisory · mesop-dev/mesop · GitHub

https://github.com/mesop-dev/mesop/security/advisories/GHSA-f3mf-hm6v-jfhh
github_commit Patch Available

commit 748e20d4a363 (mesop-dev/mesop)

Patch available: mesop-dev/mesop v1.0.0 (contains commit 748e20d4a363)

https://github.com/mesop-dev/mesop/commit/748e20d4a363d89b841d62213f5b0c6b4bed788f

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
mesop0.0.1 ... 0.9.5rc0 (71 versions)
  • every version up to 0.14.1: fixed in 0.14.1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 27× 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 200 total refreshes for this CVE.

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

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2025-30358?
CVE-2025-30358 is a high vulnerability published on March 27, 2025. Mesop is a Python-based UI framework that allows users to build web applications. A class pollution vulnerability in Mesop prior to version 0.14.1 allows attackers to overwrite global variables and class attributes in certain Mesop modules during runtime. This vulnerability could directly lead to a…
When was CVE-2025-30358 disclosed?
CVE-2025-30358 was first published on March 27, 2025, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-30358 actively exploited?
CVE-2025-30358 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.7% probability of exploitation in the next 30 days (51st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2025-30358?
CVE-2025-30358 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2025-30358?
A fix for CVE-2025-30358 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2025-30358

Explore →

Is Your Infrastructure Affected by CVE-2025-30358?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs