CVE detail
CVE-2026-5773
libcurl might in some circumstances reuse the wrong connection for SMB(S) transfers. libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead. When reusing a connection a range of criteria must be met. Due to a logical error in the code, a network transfer operation that was requested by an application could wrongfully reuse an existing SMB connection to the same server that was using a different 'share' than the new subsequent transfer should. This could in unlucky situations lead to the download of the wrong file or the upload of a file to the wrong place. When this happens, the same credentials are used and the server name is the same.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 17.9 · diversity 16.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
5 source links · newest first
- CVE-2026-5773 wrong reuse of SMB connectionMicrosoft MSRC
Information published.
vendormsrc.microsoft.comMay 19, 2026, 8:47 AM - http://www.openwall.com/lists/oss-security/2026/04/29/9www.openwall.com
No excerpt available.
Exploitwww.openwall.comMay 13, 2026, 1:01 PM - https://hackerone.com/reports/3650689hackerone.com
No excerpt available.
Exploithackerone.comMay 13, 2026, 1:01 PM No excerpt available.
Vendor Advisorycurl.seMay 13, 2026, 1:01 PMNo excerpt available.
Vendor Advisorycurl.seMay 13, 2026, 1:01 PM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
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