CVE-2026-30479

CRITICALNVD 9.19.1
EchelonGraph scoreMEDIUM confidence

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

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-04-09. NVD baseline CVSS 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this weekElevated
9.1EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (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: 0.5%CVSS: 9.1Exploit: No code on recordExposed services: Not assessed

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

The CVE record's description, written by its CNA (MITRE Corporation), states the affected versions: "A Dynamic-link Library Injection vulnerability in OSGeo Project MapServer before v8.0 allows attackers to execute arbitrary code via a crafted executable." No release containing a fix is confirmed on record.

A Dynamic-link Library Injection vulnerability in OSGeo Project MapServer before v8.0 allows attackers to execute arbitrary code via a crafted executable.

CVSS v3
9.1
EG Score
9.1CRITICALmedium confidence
EG Risk
72
EG Risk 72/100

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 (value × EchelonGraph’s weight)
Severity91% × 45%
The EG Score, 9.1 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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: No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines at low or medium mission impact and sooner than that at high, and watch for a fix.
EPSS PROB
0.5%
EPSS %ILE
44th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

No fix is confirmed yet. Restrict network exposure of the affected system within your standard update timelines at low or medium mission impact and sooner than that at high, and watch for a fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (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)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (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

April 9, 2026

Last Modified

April 14, 2026

Advisory Details (2)

Auto-updated Aug 1, 2026
No fix on record yet.
Web page

Research/CVE-2026-30479 at main · penjaminTester/Research · GitHub

https://github.com/penjaminTester/Research/tree/main/CVE-2026-30479
Web page

Welcome to MapServer — MapServer 8.6.5 documentation

https://mapserver.org/index.html

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 35× 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 264 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 169 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-16 19:20 UTCEG score recompute
  2. 2026-10-16 19:20 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  3. 2026-10-16 16:41 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  4. 2026-10-15 16:54 UTCEG score recompute
  5. 2026-10-15 16:54 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  6. 2026-10-15 16:31 UTCEPSS rescoreEPSS 0.5% · 44th percentile
  7. 2026-10-14 16:32 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  8. 2026-10-14 10:50 UTCEG score recompute
  9. 2026-10-14 10:50 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  10. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  11. 2026-10-13 09:32 UTCEG score recompute
  12. 2026-10-13 09:32 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  13. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  14. 2026-10-12 16:15 UTCEG score recompute
  15. 2026-10-12 08:43 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  16. 2026-10-11 19:58 UTCEG score recompute
  17. 2026-10-11 17:11 UTCEG score recompute
  18. 2026-10-11 14:40 UTCEG score recompute
  19. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  20. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  21. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  22. 2026-10-08 17:12 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  23. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  24. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  25. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
Show 70 more
  1. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  2. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  3. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  4. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  5. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  6. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.5% · 43rd percentile
  7. 2026-09-26 00:26 UTCEPSS rescoreEPSS 0.5% · 42nd percentile
  8. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  9. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  10. 2026-09-17 19:30 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  11. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  12. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  13. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  14. 2026-09-12 15:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  15. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  16. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  17. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  18. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  19. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  20. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  21. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  22. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  23. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  24. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  25. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  26. 2026-08-28 21:41 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  27. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  28. 2026-08-26 14:46 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  29. 2026-08-25 13:49 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  30. 2026-08-24 14:17 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  31. 2026-08-23 00:19 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  32. 2026-08-21 23:49 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  33. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  34. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  35. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  36. 2026-08-17 13:47 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  37. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  38. 2026-08-16 11:31 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  39. 2026-08-16 07:13 UTCEG score recompute
  40. 2026-08-16 07:13 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  41. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  42. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  43. 2026-08-14 22:41 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  44. 2026-08-14 18:24 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  45. 2026-08-14 13:43 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  46. 2026-08-14 09:26 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  47. 2026-08-14 05:09 UTCEG score recompute
  48. 2026-08-14 05:09 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  49. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  50. 2026-08-13 09:25 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  51. 2026-08-13 03:59 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  52. 2026-08-12 23:42 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  53. 2026-08-12 19:25 UTCEG score recompute
  54. 2026-08-12 19:25 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  55. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.3% · 24th percentile
  56. 2026-08-11 23:46 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  57. 2026-08-11 19:29 UTCEG score recompute
  58. 2026-08-11 19:29 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  59. 2026-08-11 07:18 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  60. 2026-08-11 03:01 UTCEG score recompute
  61. 2026-08-11 03:01 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  62. 2026-08-11 00:00 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  63. 2026-08-10 11:55 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  64. 2026-08-10 06:19 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  65. 2026-08-10 02:01 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  66. 2026-08-09 21:44 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  67. 2026-08-09 17:27 UTCEG score recompute
  68. 2026-08-09 17:27 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1
  69. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  70. 2026-08-09 13:10 UTCGHSA enrichmentGHSA-4mx6-xfr3-7q7g · GitHub severity CRITICAL · GitHub CVSS 9.1

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-30479?
CVE-2026-30479 is a critical-severity vulnerability; its CVE record was published on April 9, 2026. A Dynamic-link Library Injection vulnerability in OSGeo Project MapServer before v8.0 allows attackers to execute arbitrary code via a crafted executable.
When was the CVE record for CVE-2026-30479 published?
The CVE record for CVE-2026-30479 was published on April 9, 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 April 14, 2026; the record at its source may have been updated since.
Is CVE-2026-30479 actively exploited?
CVE-2026-30479 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-30479?
CVE-2026-30479 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-30479?
No fix for CVE-2026-30479 is confirmed yet. Until one is published, restrict network exposure of the affected system — for example, keep it off the internet or limit it to trusted networks — and watch for a fix. The CVE record's description, written by its CNA (MITRE Corporation), states the affected versions: "A Dynamic-link Library Injection vulnerability in OSGeo Project MapServer before v8.0 allows attackers to execute arbitrary code via a crafted executable." No release containing a fix is confirmed on record.

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