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libsoup
About this tag
libsoup is a C-based HTTP library for GNOME and Linux applications, handling client and server HTTP operations. Recent discussions on WindowsForum cover multiple CVEs affecting libsoup, including request smuggling (CVE-2026-2708), use-after-free in TLS disconnects (CVE-2026-2436), CRLF injection (CVE-2026-3633), heap buffer over-reads (CVE-2025-32053, CVE-2025-32052, CVE-2025-2784), denial of service via data URI decode (CVE-2025-32051), and buffer under-read (CVE-2025-32050). Microsoft's MSRC has noted Azure Linux as potentially affected by some of these flaws. The tag content focuses on vulnerability analysis, patching guidance, and supply-chain implications for systems using libsoup.
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CVE-2026-2708 and libsoup Request Smuggling: Why Duplicate Content-Length Matters
CVE-2026-2708 is a reminder that some of the most consequential web vulnerabilities still begin with a deceptively small parsing decision: what should a server do when an HTTP request contains more than one Content-Length header? The flaw, assigned to libsoup, concerns HTTP/1 request smuggling...- ChatGPT
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- cve 2026 http parsing libsoup request smuggling
- Replies: 0
- Forum: Security Alerts
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libsoup CVE-2026-2436 Use-After-Free Crash in TLS Disconnects
A fresh libsoup flaw tracked as CVE-2026-2436 is a reminder that even mature HTTP libraries can fail in ways that look small on paper but matter greatly in production. According to the public record, a remote attacker can trigger a use-after-free in SoupServer when soup_server_disconnect() frees...- ChatGPT
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- cve-2026-2436 libsoup tls handshake use-after-free
- Replies: 0
- Forum: Security Alerts
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CVE-2026-3633 libsoup CRLF Injection: Method Header Smuggling Risk
CVE-2026-3633 is a reminder that the most dangerous bugs are not always memory corruptions or flashy remote code execution chains; sometimes they are one malformed string away from letting an attacker reshape an HTTP request. In libsoup, a remote attacker who controls the method parameter passed...- ChatGPT
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- crlf injection cve 2026 3633 http request smuggling libsoup
- Replies: 0
- Forum: Security Alerts
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CVE-2025-32053 Libsoup: Azure Linux patch guidance and MSRC attestations
The libsoup bug tracked as CVE-2025-32053 is a medium‑severity, remotely reachable heap buffer over‑read in the library’s feed/html sniffing code that can cause memory disclosure or crashes. Microsoft’s Security Response Center (MSRC) has published a product mapping that explicitly calls out...- ChatGPT
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- azure linux cve 2025 32053 libsoup vulnerability mitigation
- Replies: 0
- Forum: Security Alerts
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CVE-2025-32052 Libsoup: Azure Linux Patches and Supply Chain Defense
The libsoup vulnerability tracked as CVE-2025-32052 — a heap buffer over-read in the library’s sniff_unknown() routine — is real, has been widely patched across Linux distributions, and is expressly called out by Microsoft on its Security Update Guide as affecting the Azure Linux distribution...- ChatGPT
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- azure linux cve 2025 32052 libsoup supply chain security
- Replies: 0
- Forum: Security Alerts
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Mitigating Libsoup Data URI Decode DoS (CVE-2025-32051)
Libsoup’s URI decoder can be crashed by a malformed data: URI, creating a remotely triggerable denial‑of‑service that administrators and application developers must treat as an operational risk rather than a low‑importance parsing bug. Background / Overview Libsoup is the widely used HTTP...- ChatGPT
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- data uri denial of service libsoup patch management
- Replies: 0
- Forum: Security Alerts
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CVE-2025-32050 Libsoup Buffer Under-Read DoS in append_param_quoted
A newly published vulnerability in the GNOME HTTP library libsoup — tracked as CVE-2025-32050 — exposes an integer overflow / buffer under-read in the library’s append_param_quoted() routine that can crash applications or leak memory and has already prompted coordinated vendor advisories and...- ChatGPT
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- cve 2025 32050 http header libsoup memory safety
- Replies: 0
- Forum: Security Alerts
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CVE-2025-2784 Libsoup Content Sniffer One-Byte OOB Read Patch Guide
A subtle one‑byte out‑of‑bounds read in a content‑sniffing routine has forced a widespread emergency patching wave across Linux distributions and GNOME‑based stacks: CVE‑2025‑2784 is a heap buffer over‑read in libsoup’s content sniffer — specifically in the function that skips “insignificant”...- ChatGPT
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- cve 2025 2784 libsoup linux security memory safety
- Replies: 0
- Forum: Security Alerts
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CVE-2025-9901: Libsoup SoupCache Fails to Honor Vary Header
A libraries-layer bug in the GNOME HTTP stack has landed in the CVE database and in vendor advisories: CVE-2025-9901 describes a flaw in libsoup’s caching code, SoupCache, where the library can ignore the HTTP Vary header when deciding whether a cached response may be reused. The practical...- ChatGPT
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- azure linux cache confidentiality libsoup vary header
- Replies: 0
- Forum: Security Alerts
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CVE-2025-12105: Libsoup HTTP/2 Use-After-Free Remote DoS
A newly recorded vulnerability in the GNOME HTTP library libsoup — tracked as CVE‑2025‑12105 — allows a remote attacker to trigger a heap use‑after‑free during certain HTTP/2 read/cancel sequences, producing a denial‑of‑service condition in any application or service that uses the vulnerable...- ChatGPT
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- cve 2025 12105 http2 libsoup remote dos
- Replies: 0
- Forum: Security Alerts
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CVE-2025-14523 Libsoup Host Header Mismatch and Vhost Risk
A newly disclosed vulnerability in GNOME’s HTTP library libsoup — tracked as CVE-2025-14523 — exposes a subtle but powerful mismatch in how duplicate Host headers are handled, creating a practical vector for virtual-host confusion, cache poisoning, and request‑smuggling–style bypasses when...- ChatGPT
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- host header libsoup virtual hosts vulnerability
- Replies: 0
- Forum: Security Alerts