CVE-2023-28319

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2023-05-26. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.5%CVSS: 7.5Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

A use after free vulnerability exists in curl

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
65
EG Risk 65/100CISA SSVC

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
Severity75% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
2.5%
EPSS %ILE
84th
KEV
Not listed

CISA SSVCTrack 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 public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

May 26, 2023

Last Modified

January 15, 2025

References (18)

Vendor Advisories for CVE-2023-28319(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 / EcosystemFixed in / PatchReleasedSource
redhatjbcs-httpd24-curl-0:8.2.1-1.el7jbcs2023-08-15redhat
redhatjbcs-httpd24-curl2023-08-15redhat

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

(13 across 13 ecosystems)
Alpine:v3.15(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Alpine:v3.16(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Alpine:v3.17(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Alpine:v3.18(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Alpine:v3.19(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
curl—8.1.0-r0—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
curl—7.88.1-10—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
curl—7.88.1-10—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
curl—7.88.1-10—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 23× 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 183 total refreshes for this CVE.

  1. 2026-10-03 14:23 UTCEPSS rescore
  2. 2026-10-02 16:23 UTCEPSS rescore
  3. 2026-10-01 19:47 UTCEPSS rescore
  4. 2026-09-30 16:20 UTCEG score recompute
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  25. 2026-09-04 05:59 UTCOSV refresh
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  5. 2026-08-30 01:19 UTCEPSS rescore
  6. 2026-08-28 21:38 UTCEPSS rescore
  7. 2026-08-27 14:23 UTCEPSS rescore
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  16. 2026-08-17 16:59 UTCOSV refresh
  17. 2026-08-17 13:44 UTCEPSS rescore
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  22. 2026-08-12 13:48 UTCEPSS rescore
  23. 2026-08-11 13:39 UTCEPSS rescore
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  25. 2026-08-08 16:34 UTCEPSS rescore
  26. 2026-08-07 16:24 UTCEPSS rescore
  27. 2026-08-06 13:44 UTCEPSS rescore
  28. 2026-08-05 19:15 UTCEPSS rescore
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  30. 2026-08-04 15:07 UTCEPSS rescore
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  33. 2026-08-02 11:57 UTCOSV refresh
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  42. 2026-07-28 15:34 UTCEPSS rescore
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  44. 2026-07-27 14:10 UTCEPSS rescore
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  47. 2026-07-25 14:16 UTCEPSS rescore
  48. 2026-07-24 14:15 UTCEPSS rescore
  49. 2026-07-23 14:16 UTCEPSS rescore
  50. 2026-07-23 14:16 UTCEPSS rescore
  51. 2026-07-23 02:20 UTCEG score recompute
  52. 2026-07-22 23:08 UTCEG score recompute
  53. 2026-07-22 14:06 UTCEPSS rescore
  54. 2026-07-22 14:06 UTCEPSS rescore
  55. 2026-07-21 15:23 UTCEPSS rescore
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  65. 2026-07-15 19:23 UTCOSV refresh
  66. 2026-07-15 16:56 UTCEPSS rescore
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Frequently asked(5)

What is CVE-2023-28319?
CVE-2023-28319 is a high vulnerability published on May 26, 2023. A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 256 hash. When this check fails, libcurl would free the memory for the fingerprint before it returns an error message containing the (now freed) hash. This flaw…
When was CVE-2023-28319 disclosed?
CVE-2023-28319 was first published on May 26, 2023, with the most recent update on January 15, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-28319 actively exploited?
CVE-2023-28319 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2.5% probability of exploitation in the next 30 days (84th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2023-28319?
CVE-2023-28319 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2023-28319?
A fix for CVE-2023-28319 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2023-28319 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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