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Vulnerability · SUSE-SU-2026:4690-1

Security update for libsoup

Published Oct 16, 2026 · corrected/updated Oct 17, 2026 · evidence confidence medium

This update for libsoup fixes the following issues: - CVE-2026-12478: websocket: Fix out-of-bounds read when reading unmasked frame (bsc#1271401). - CVE-2026-12547: Header 'Proxy-Authorization' leads to credentials being send to different proxy after proxy switch (bsc#1272195). - CVE-2026-15711: SoupWebsocketConnection: WebSocket remote denial of service via oversized control frame protocol violation (bsc#1271446). - CVE-2026-15713: SoupCache: libsoup: HTTP/2 frame window exhaustion remote denial of service via memory leak (bsc#1271448). - CVE-2026-15714: SoupMultipartInputStream: libsoup: Out-of-bounds read in soup_multipart_input_stream_read_headers via an oversized multipart boundary string (bsc#1271449). - CVE-2026-66339: proxy credentials leak to destination server via header in CONNECT tunnels (bsc#1273156). - CVE-2026-102556: Heap buffer overflow from WebSocket Pong signal type confusion (bsc#1283300). - CVE-2026-102557: Heap buffer overflow during WebSocket message reassembly (bsc#1283301). - CVE-2026-102558: Heap buffer overflow during WebSocket receive-buffer growth (bsc#1283302). - CVE-2026-102559: Heap buffer overflow during WebSocket client-frame masking (bsc#1283303). - CVE-2026-103399: incomplete request body draining in HTTP/1.x early responses can allow HTTP request smuggling (bsc#1283831).

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

SUSE-SU-2026:4690-1 is a unknown public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: libsoup (0 → 2.62.2-5.49.1); libsoup (0 → 2.62.2-5.49.1). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: no CVSS/EPSS yet. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: osv. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in CISA KEV or VulnCheck KEV.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 16, 2026 · OpenSSF OSV / OSV Scanner

    Detected

    This update for libsoup fixes the following issues: - CVE-2026-12478: websocket: Fix out-of-bounds read when reading unmasked frame (bsc#1271401). - CVE-2026-12547: Header 'Proxy-Authorization' leads to credentials being send to different proxy after proxy switch (bsc#1272195). - CVE-2026-15711: SoupWebsocketConnection: WebSocket remote denial of service via oversized control frame protocol violat

  2. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    libsoup fixed in 2.62.2-5.49.1; libsoup fixed in 2.62.2-5.49.1

  3. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    libsoup fixed in 2.62.2-5.49.1

  4. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    This update for libsoup fixes the following issues: - CVE-2026-12478: websocket: Fix out-of-bounds read when reading unmasked frame (bsc#1271401). - CVE-2026-12547: Header 'Proxy-Authorization' leads to credentials being send to different proxy after proxy switch (bsc#1272195). - CVE-2026-15711: SoupWebsocketConnection: WebSocket remote denial of service via oversized control frame protocol violat

Affected

  • SUSE:Linux Enterprise Server 12 SP5-LTSS libsoup0 → 2.62.2-5.49.1
  • SUSE:Linux Enterprise Server LTSS Extend libsoup0 → 2.62.2-5.49.1

Sources

References