Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2023-23914

CVE-2023-23914CRITICAL

n/a https://github.com/curl/curl — A cleartext transmission of sensitive information vulnerability exists in curl <v7.88.0 that could cause HSTS functionality fail when mul…

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  N    9.1   .0090   59.0     —

AFFECTED
  Product                       Versions           Fixed
  https://github.com/curl/curl  Fixed in 7.88.0 –  —

TIMELINE
  Jan 19  Reserved by hackerone
  Feb 23  Published (CNA: hackerone)
  Oct 14  EXPLOIT PUBLISHED — CVE-2023-23914 (https://github.com/curl/curl). Public exploit reference added.

CWE-319 · CNA: hackerone · CVSS v3.1 · 4 references · NVD status: Modified

Description

A cleartext transmission of sensitive information vulnerability exists in curl <v7.88.0 that could cause HSTS functionality fail when multiple URLs are requested serially. Using its HSTS support, curl can be instructed to use HTTPS instead of usingan insecure clear-text HTTP step even when HTTP is provided in the URL. ThisHSTS mechanism would however surprisingly be ignored by subsequent transferswhen done on the same command line because the state would not be properlycarried on.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
January 19, 2023	Reserved	Reserved by hackerone
February 23, 2023	Published	Published (CNA: hackerone)
October 14, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2023-23914 (https://github.com/curl/curl). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	https://github.com/curl/curl	—	Fixed in 7.88.0	—

Weaknesses

CWE-319

References (4)

https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://hackerone.com/reports/1813864 [Exploit, Issue Tracking]
https://security.gentoo.org/glsa/202310-12 [Third Party Advisory]
https://security.netapp.com/advisory/ntap-20230309-0006/ [Third Party Advisory]

Authoritative record: CVE-2023-23914 at cve.org

Weaknesses: CWE-319

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2023-23914 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.