SUSE SLES15 / openSUSE 15 Security Update : curl (SUSE-SU-2026:0885-1)

The remote SUSE Linux SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:0885-1 advisory. - CVE-2026-1965: bad reuse of HTTP Negotiate connection bsc1259362. - CVE-2026-3783: token leak with redirect and net...

Security update for curl

This update for curl fixes the following issues: CVE-2026-1965: bad reuse of HTTP Negotiate connection bsc1259362. CVE-2026-3783: token leak with redirect and netrc bsc1259363. CVE-2026-3784: wrong proxy connection reuse with credentials bsc1259364. CVE-2026-3805: use after free in SMB connection...

SUSE-SU-2026:0885-1 Security update for curl

This update for curl fixes the following issues: - CVE-2026-1965: bad reuse of HTTP Negotiate connection bsc1259362. - CVE-2026-3783: token leak with redirect and netrc bsc1259363. - CVE-2026-3784: wrong proxy connection reuse with credentials bsc1259364. - CVE-2026-3805: use after free in SMB...

Security update for curl

This update for curl fixes the following issues: CVE-2026-1965: bad reuse of HTTP Negotiate connection bsc1259362. CVE-2026-3783: token leak with redirect and netrc bsc1259363. CVE-2026-3784: wrong proxy connection reuse with credentials bsc1259364. CVE-2026-3805: use after free in SMB connection...

SUSE-SU-2026:20668-1 Security update for curl

This update for curl fixes the following issues: - CVE-2026-1965: bad reuse of HTTP Negotiate connection bsc1259362. - CVE-2026-3783: token leak with redirect and netrc bsc1259363. - CVE-2026-3784: wrong proxy connection reuse with credentials bsc1259364. - CVE-2026-3805: use after free in SMB...

SUSE-SU-2026:20722-1 Security update for curl

This update for curl fixes the following issues: - CVE-2026-1965: bad reuse of HTTP Negotiate connection bsc1259362. - CVE-2026-3783: token leak with redirect and netrc bsc1259363. - CVE-2026-3784: wrong proxy connection reuse with credentials bsc1259364. - CVE-2026-3805: use after free in SMB...

The vulnerability of the software for interacting with servers via cURL, which involves redirecting URLs to unreliable websites, allows attackers to compromise the confidentiality of protected information.

The vulnerability of the software for interacting with servers via cURL is related to the redirection of URLs to unreliable websites. Exploiting this vulnerability allows a malicious actor to compromise the confidentiality of protected information...

Important Photon OS Security Update - PHSA-2026-4.0-0977

Updates of 'linux', 'curl' packages of Photon OS have been released...

CVE-2026-3783

A flaw was found in curl. When an OAuth2 bearer token is used for an HTTPS transfer that redirects to a second URL, curl could unintentionally leak the token. This occurs if the second hostname has entries in the .netrc file, allowing the bearer token intended for the first host to be sent to the...

CVE-2026-3805

When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory...

UBUNTU-CVE-2026-3805

When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory...

CVE-2026-3783

When an OAuth2 bearer token is used for an HTTPS transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances. If the hostname that the first request is redirected to has information in the used .netrc file, with eithe...

UBUNTU-CVE-2026-3784

curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection...

SUSE CVE-2026-3783

When an OAuth2 bearer token is used for an HTTPS transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances. If the hostname that the first request is redirected to has information in the used .netrc file, with eithe...

SUSE CVE-2026-3784

curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection...

SUSE CVE-2026-3805

When doing a second SMB request to the same host again, curl would wrongly use a data pointer pointing into already freed memory...

curl: Curl_compareheader() fails to match multi-value HTTP headers

Summary Curlcompareheader in lib/http.c fails to scan the full value of HTTP headers for substring matches. Due to an incorrect loop condition, only the first byte position of the header value is checked. This causes curl to miss connection options like close when they appear as non-first tokens ...

curl: urlapi: off-by-one in custom scheme validation skips last character

Summary In lib/urlapi.c, the seturlscheme function has an off-by-one error when validating custom scheme names. The validation loop checks scheme0 twice once by ISALPHA, once in the loop and never checks the last character. This allows schemes ending with any arbitrary byte e.g., foo!, bar, bad/ ...

Use After Free

Overview Affected versions of this package are vulnerable to Use After Free in smb.c, which may reuse already freed memory from a previous SMB connection request. The window of opportunity to exploit this is small, and the region of memory exposed is small and out of the attacker's control...

EUVD-2026-11139

curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection...