CVE-2026-8932
highpriority · track · 10EPSS 0.004 · 34 %ileexploit · PoCDEEUFRUSEPSS · scored 2026-10-27
libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, some TLS settings related to client certificates were left out from the configuration match checks, making them match too easily. In particular options related to the private key.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedRTU500 series CMU Firmwarecisa_csaf_ot
Update to CMU Firmware version 13.9.1
- MitigationRTU500 series CMU Firmwarecisa_csaf_ot
Follow general mitigation factors/workarounds
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (2)
Public proof-of-concept and weaponised exploit code.
- 0xBlackash/CVE-2026-8932CVE-2026-8932PoC · poc_in_github
affected products (218)
Products and version ranges known to be affected.
advisories (6)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-2065cURL: Mehrere SchwachstellenDeutsch2026-06-24csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in cURL ausnutzen, um Sicherheitsvorkehrungen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren oder einen Denial-of-Service-Zustand zu verursachen.
- ICSA-26-293-05Hitachi Energy RTU500 Product2026-09-01icsa · cisa_csaf_otUS
Hitachi Energy is aware of vulnerabilities that affect RTU500 product versions listed in this document. These vulnerabilities if exploited can have impact on confidentiality, integrity and availability of the product. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.
- CERTFR-2026-AVI-1351Multiples vulnérabilités dans Oracle MySQLFrançais2026-10-21vendor · certfrFR
- CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR
- CERTFR-2026-AVI-1390Multiples vulnérabilités dans Tenable Network MonitorFrançais2026-10-27vendor · certfrFR
- CURL-CVE-2026-8932incomplete mTLS config matching in conn reuse2026-06-24vendor · osvUS
libcurl would reuse a previously created connection even when some mTLS config related option had been changed that should have prohibited reuse. libcurl keeps previously used connections in a connection pool for subsequent transfers to reuse if one of them matches the setup. However, some TLS settings related to client certificates were left out from the configuration match checks, making them match too easily. In particular options related to the private key.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (9)
External citations — patches, advisories, analysis.
- https://curl.se/docs/CVE-2026-8932.htmlcnnvd
- https://curl.se/docs/CVE-2026-8932.jsoncnnvd
- https://hackerone.com/reports/3733910cnnvd
- https://curl.se/docs/CVE-2026-8932.htmlenisa_euvd
- https://curl.se/docs/CVE-2026-8932.jsonenisa_euvd
- https://hackerone.com/reports/3733910enisa_euvd
- https://curl.se/docs/CVE-2026-8932.htmlPatchVendor Advisorynvd
- https://curl.se/docs/CVE-2026-8932.jsonVendor Advisorynvd
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