CVE-2023-23915

MEDIUMNVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

Score 6.5 from GitHub Security Advisory published 2023-02-23. NVD baseline CVSS 6.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
6.5
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 1%CVSS: 6.5Exploit: NoneExposed: 0

A fix is available — apply it.

A cleartext transmission of sensitive information vulnerability exists in curl

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

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
Severity65% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
54.8%
KEV
Not listed

Published

February 23, 2023

Last Modified

February 13, 2026

References (6)

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntucurl (7.85.0-1ubuntu0.3) @ kinetic2026-05-25ubuntu
redhatjbcs-httpd24-curl2023-06-05redhat
redhatjbcs-httpd24-curl-0:8.0.1-1.el7jbcs2023-06-05redhat

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.

Weakness Classification(1)

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

All Vendor Advisories

(4)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 13× in last 7d / 50× 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 111 total refreshes for this CVE.

  1. 2026-07-23 14:16 UTCEPSS rescore
  2. 2026-07-23 14:16 UTCEPSS rescore
  3. 2026-07-23 02:19 UTCEG score recompute
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  47. 2026-06-10 22:17 UTCEPSS rescore
  48. 2026-06-10 15:17 UTCOSV refresh
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Frequently asked(5)

What is CVE-2023-23915?
CVE-2023-23915 is a medium vulnerability published on February 23, 2023. A cleartext transmission of sensitive information vulnerability exists in curl <v7.88.0 that could cause HSTS functionality to behave incorrectly when multiple URLs are requested in parallel. Using its HSTS support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP…
When was CVE-2023-23915 disclosed?
CVE-2023-23915 was first published in the National Vulnerability Database on February 23, 2023, with the most recent update on February 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-23915 actively exploited?
CVE-2023-23915 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 54.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-23915?
CVE-2023-23915 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2023-23915?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-23915, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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