CVE-2026-80231Disclosure

LOW

Exploit discussion active in current signal (1 latest mentions)

Immediate actions

  • Hunt for exploitation attempts and persistence artifacts
  • Increase monitoring for publicly documented tradecraft
  • Track advisory updates for patch or workaround availability

Recommended action window: High priority (within 72h)

1.5/ 10 priority

Priority

LOW

Exploitation

NONE

PoC

YES

Patch

NONE

Momentum

STABLE

Threat summary

  • Public PoC is present in monitored signal
  • 3 mentions across 3 observed days
  • Momentum state: stable

What's happening

  • PoC mentioned or linked in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • General: 1 classified signal
  • Peaked 2d ago at 1 mentions (2026-09-03); latest day: 1
  • 3 total mentions across 3 days

Deep dive

Activity timeline3 mentions / 3d
00111Mentions · 2026-09-03: 1Mentions · 2026-09-06: 1Mentions · 2026-09-07: 1PoC Mentioned / Linked · 2026-09-03: 1Technical Details · 2026-09-06: 1Technical Details · 2026-09-07: 109-0309-0609-07
Signal classification2 categories
Disclosure
266.7%
General
133.3%
Referenced assets3 URLs
Classification over time
DateTotalLabels
2026-09-031
General1
2026-09-061
Disclosure1
2026-09-071
Disclosure1
Full discourse3 posts
  • ROHIT@rynosec
    General

    ⚡ CVE-2026-80231: native CA store conn reuse 👨🏻‍💻 giant_anteater ➟ curl 🟨 Low 💰 None 🔗 https://hackerone.com/reports/3969368 #bugbounty #bugbountytips #cybersecurity #infosec https://t.co/YEIDsNb7QL

    Post summary

    A brief announcement of CVE-2026-80231 is posted, linking to a HackerOne report, but no technical details, patch information, or exploit data are supplied.

    01021304
    6.8K followersView on X
  • Severity Daily@severitydaily
    Disclosure

    June's curl native-CA flaw drew a 9.1 from CISA; September's wider version of it entered NVD with no score at all https://severitydaily.com/curl-cve-2026-80231-native-ca-conn-reuse-nvd-received-versus-11564-cisa-adp/

    Post summary

    The article highlights the difference in CVSS scoring for curl's native-CA flaw: CISA assigned a 9.1 score in June, while the NVD entry in September received no score, underscoring a discrepancy in vulnerability assessment.

    0000040
    23 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-80231 A flaw in libcurl makes it wrongly reuse an existing HTTPS connection setup for a given hostname even when using a different Native CA Store setting (`CURLSSLOPT_NATI… https://www.cve.org/CVERecord?id=CVE-2026-80231

    Post summary

    The entry details a flaw in libcurl that incorrectly reuses HTTPS connections when a different Native CA Store setting is applied.

    00000731
    58.1K followersView on X

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