CVE-2024-38476

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-07-01. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this weekElevated

Also known asEUVD-2024-37357 (ENISA EUVD) · GHSA-fpq9-w5cw-5hf8 (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 42%CVSS: 9.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable.

Users are recommended to upgrade to version 2.4.60, which fixes this issue.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
76
EG Risk 76/100

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)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation42% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (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: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
42%
EPSS %ILE
98th
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 (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
42% 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; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days 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; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (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.

The score's inputs: 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

July 1, 2024

Last Modified

November 3, 2025

Advisory Details (4)

Auto-updated Oct 9, 2026
Patch available.
Web pageMentions a patch (unverified)

Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Project

https://httpd.apache.org/security/vulnerabilities_24.html
Web page

oss-security - CVE-2024-38476: Apache HTTP Server may use exploitable/malicious backend application output to run local handlers via internal redirect

http://www.openwall.com/lists/oss-security/2024/07/01/9
Web page

Full Disclosure: APPLE-SA-10-28-2024-3 macOS Sequoia 15.1

http://seclists.org/fulldisclosure/2024/Oct/11

Patch Availability(15)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuapache2-utils (2.4.18-2ubuntu3.17+esm17) @ xenial2026-10-31ubuntu
ubuntuapache2-utils (2.4.18-2ubuntu3.17+esm13) @ xenial2026-10-31ubuntu
ubuntulibapache2-mod-proxy-uwsgi (2.4.58-1ubuntu8.2) @ noble2026-10-31ubuntu
redhathttpd-0:2.4.6-99.el7_9.32024-09-25redhat
redhathttpd-0:2.4.6-90.el7_7.52024-09-11redhat
redhathttpd:2.4-8020020240821201937.4cda2c842024-09-11redhat
redhathttpd:2.4-8040020240821201239.522a0ee42024-09-09redhat
redhathttpd:2.4-8060020240820194205.ad008a3a2024-09-09redhat
redhathttpd:2.4-8080020240820193327.63b345852024-09-03redhat
redhathttpd-0:2.4.53-11.el9_2.112024-08-26redhat
redhathttpd-0:2.4.51-7.el9_0.82024-08-26redhat
redhatjbcs-httpd24-mod_security-0:2.9.3-40.el7jbcs2024-08-13redhat
redhatjbcs-httpd24-httpd2024-08-13redhat
redhathttpd:2.4-8100020240807144746.489197e62024-08-12redhat
redhathttpd-0:2.4.57-11.el9_4.12024-08-08redhat

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

(12 across 12 ecosystems)
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-r0: fixed in 2.4.60-r0
—
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-r0: fixed in 2.4.60-r0
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-r0: fixed in 2.4.60-r0
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-r0: fixed in 2.4.60-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-r0: fixed in 2.4.60-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-r0: fixed in 2.4.60-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-r0: fixed in 2.4.60-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-r0: fixed in 2.4.60-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
apache22.4.48-3.1 ... 2.4.60-1 (49 versions)
  • every version up to 2.4.61-1~deb11u1: fixed in 2.4.61-1~deb11u1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
apache22.4.57-2 ... 2.4.61-1~deb11u1 (10 versions)
  • every version up to 2.4.61-1~deb12u1: fixed in 2.4.61-1~deb12u1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-1: fixed in 2.4.60-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.60-1: fixed in 2.4.60-1
—

Weakness Classification(1)

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

Additional Vendor Advisories

(11)

Data Freshness Timeline

(refreshed 24× in last 7d / 87× 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 99 of 241 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 142 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 18:10 UTCEG score recompute
  2. 2026-11-01 18:10 UTCVendor advisory
  3. 2026-11-01 18:10 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-10-31 16:30 UTCEPSS rescoreEPSS 42% · 98th percentile
  5. 2026-10-31 15:47 UTCEG score recompute
  6. 2026-10-31 15:47 UTCVendor advisory
  7. 2026-10-31 15:47 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-10-30 16:32 UTCEPSS rescoreEPSS 42% · 98th percentile
  9. 2026-10-30 13:24 UTCEG score recompute
  10. 2026-10-30 13:24 UTCVendor advisory
  11. 2026-10-30 13:24 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-10-29 16:30 UTCEPSS rescoreEPSS 42% · 98th percentile
  13. 2026-10-29 11:01 UTCEG score recompute
  14. 2026-10-29 11:01 UTCVendor advisory
  15. 2026-10-29 11:00 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-10-28 16:29 UTCEPSS rescoreEPSS 42% · 98th percentile
  17. 2026-10-28 08:26 UTCEG score recompute
  18. 2026-10-28 08:26 UTCVendor advisory
  19. 2026-10-28 08:26 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-27 16:29 UTCEPSS rescoreEPSS 42% · 98th percentile
  21. 2026-10-27 05:45 UTCEG score recompute
  22. 2026-10-27 05:45 UTCVendor advisory
  23. 2026-10-27 05:45 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-26 16:29 UTCEPSS rescoreEPSS 42% · 98th percentile
  25. 2026-10-25 23:20 UTCVendor advisory
Show 74 more
  1. 2026-10-25 23:20 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-10-25 17:07 UTCEG score recompute
  3. 2026-10-25 16:30 UTCEPSS rescoreEPSS 42% · 98th percentile
  4. 2026-10-24 20:54 UTCEG score recompute
  5. 2026-10-24 20:54 UTCVendor advisory
  6. 2026-10-24 20:54 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-10-24 16:30 UTCEPSS rescoreEPSS 42% · 98th percentile
  8. 2026-10-23 18:31 UTCEG score recompute
  9. 2026-10-23 18:31 UTCVendor advisory
  10. 2026-10-23 18:31 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-10-23 16:29 UTCEPSS rescoreEPSS 42% · 98th percentile
  12. 2026-10-22 16:31 UTCEPSS rescoreEPSS 42% · 98th percentile
  13. 2026-10-22 16:09 UTCEG score recompute
  14. 2026-10-22 16:09 UTCVendor advisory
  15. 2026-10-22 16:08 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-10-21 16:29 UTCEPSS rescoreEPSS 42% · 98th percentile
  17. 2026-10-21 13:26 UTCEG score recompute
  18. 2026-10-21 13:26 UTCVendor advisory
  19. 2026-10-21 13:26 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-20 16:30 UTCEPSS rescoreEPSS 42% · 98th percentile
  21. 2026-10-20 11:00 UTCEG score recompute
  22. 2026-10-20 11:00 UTCVendor advisory
  23. 2026-10-20 10:59 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-19 16:29 UTCEPSS rescoreEPSS 42% · 98th percentile
  25. 2026-10-19 08:35 UTCEG score recompute
  26. 2026-10-19 08:35 UTCVendor advisory
  27. 2026-10-19 08:35 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  28. 2026-10-18 16:30 UTCEPSS rescoreEPSS 42% · 98th percentile
  29. 2026-10-18 06:11 UTCEG score recompute
  30. 2026-10-18 06:11 UTCVendor advisory
  31. 2026-10-18 06:11 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  32. 2026-10-17 16:31 UTCEPSS rescoreEPSS 42% · 98th percentile
  33. 2026-10-17 03:46 UTCEG score recompute
  34. 2026-10-17 03:46 UTCVendor advisory
  35. 2026-10-17 03:46 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  36. 2026-10-16 16:36 UTCEPSS rescoreEPSS 42% · 98th percentile
  37. 2026-10-16 01:22 UTCEG score recompute
  38. 2026-10-16 01:22 UTCVendor advisory
  39. 2026-10-16 01:22 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  40. 2026-10-15 16:30 UTCEPSS rescoreEPSS 42% · 98th percentile
  41. 2026-10-14 20:51 UTCEG score recompute
  42. 2026-10-14 20:51 UTCVendor advisory
  43. 2026-10-14 20:50 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  44. 2026-10-14 16:30 UTCEPSS rescoreEPSS 42% · 98th percentile
  45. 2026-10-13 16:43 UTCEG score recompute
  46. 2026-10-13 16:43 UTCVendor advisory
  47. 2026-10-13 16:43 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  48. 2026-10-13 16:30 UTCEPSS rescoreEPSS 42% · 98th percentile
  49. 2026-10-12 17:50 UTCEG score recompute
  50. 2026-10-12 16:31 UTCEPSS rescoreEPSS 42% · 98th percentile
  51. 2026-10-12 14:04 UTCVendor advisory
  52. 2026-10-12 14:03 UTCGHSA enrichmentGHSA-fpq9-w5cw-5hf8 · GitHub severity CRITICAL · GitHub CVSS 9.8
  53. 2026-10-11 21:15 UTCEG score recompute
  54. 2026-10-11 16:08 UTCEG score recompute
  55. 2026-10-11 13:46 UTCEPSS rescoreEPSS 42% · 98th percentile
  56. 2026-10-10 19:58 UTCEPSS rescoreEPSS 42% · 98th percentile
  57. 2026-10-10 15:25 UTCOSV refresh
  58. 2026-10-09 20:05 UTCEPSS rescoreEPSS 42% · 98th percentile
  59. 2026-10-08 17:07 UTCEPSS rescoreEPSS 42% · 98th percentile
  60. 2026-10-07 23:46 UTCEPSS rescoreEPSS 42% · 98th percentile
  61. 2026-10-06 15:15 UTCEPSS rescoreEPSS 42% · 98th percentile
  62. 2026-10-03 14:24 UTCEPSS rescoreEPSS 42% · 98th percentile
  63. 2026-10-01 19:48 UTCEPSS rescoreEPSS 42% · 98th percentile
  64. 2026-09-30 19:48 UTCEG score recompute
  65. 2026-09-30 15:01 UTCEPSS rescoreEPSS 42% · 98th percentile
  66. 2026-09-29 15:17 UTCEPSS rescoreEPSS 42% · 98th percentile
  67. 2026-09-28 13:49 UTCEPSS rescoreEPSS 42% · 98th percentile
  68. 2026-09-27 13:44 UTCEPSS rescoreEPSS 42% · 98th percentile
  69. 2026-09-26 15:57 UTCEPSS rescoreEPSS 42% · 98th percentile
  70. 2026-09-26 00:23 UTCEPSS rescoreEPSS 42% · 98th percentile
  71. 2026-09-24 14:01 UTCEPSS rescoreEPSS 42% · 98th percentile
  72. 2026-09-23 13:46 UTCEPSS rescoreEPSS 42% · 98th percentile
  73. 2026-09-22 14:46 UTCEPSS rescoreEPSS 42% · 98th percentile
  74. 2026-09-21 20:32 UTCEPSS rescoreEPSS 42% · 98th percentile

Frequently asked(5)

What is CVE-2024-38476?
CVE-2024-38476 is a critical-severity vulnerability; its CVE record was published on July 1, 2024. Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable. Users are recommended to upgrade to version 2.4.60, which fixes this issue.
When was the CVE record for CVE-2024-38476 published?
The CVE record for CVE-2024-38476 was published on July 1, 2024. 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 November 3, 2025; the record at its source may have been updated since.
Is CVE-2024-38476 actively exploited?
CVE-2024-38476 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 42% probability of exploitation in the next 30 days (98th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-38476?
CVE-2024-38476 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2024-38476?
A fix for CVE-2024-38476 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-38476 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-38476

Explore →

Is Your Infrastructure Affected by CVE-2024-38476?

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