Security readout for executives and security teams
Plain-English summary
CVE-2026-1760 is a medium-severity flaw in libsoup’s SoupServer. A remote unauthenticated client can send unusual HTTP requests that may be processed incorrectly, potentially causing denial of service. Business urgency depends on whether internet- or partner-facing services use SoupServer through libsoup on affected Red Hat systems.
Executive priority
Prioritize inventory and patch tracking for externally reachable services using libsoup SoupServer. Treat this as moderate operational risk: unauthenticated network denial of service is possible, but public sources do not indicate active exploitation or code execution.
Technical view
SoupServer mishandles requests combining Transfer-Encoding: chunked with Connection: keep-alive, failing to close the connection as RFC 9112 requires. This creates an HTTP request smuggling condition, classified as CWE-444. Red Hat rates it CVSS 5.3, network exploitable, low complexity, no privileges or user interaction, with low availability impact.
Likely exposure
Exposure is most likely where applications use libsoup SoupServer and accept remote HTTP connections. Red Hat lists RHEL 7, 8, 9 libsoup and RHEL 10 libsoup3 as affected; RHEL 6 status is unknown in the supplied data.
Exploitation context
The supplied sources do not show CISA KEV listing or active exploitation. Exploitation requires network access to an affected SoupServer-based service and crafted HTTP behavior. Impact described by sources is unintended request processing and potential denial-of-service, not data theft or code execution.
Researcher notes
Key evidence comes from Red Hat and the CVE record. The affected-version detail is coarse by RHEL release and package, with RHEL 6 marked unknown. No specific fixed versions or workaround details are present in the supplied bundle, so remediation should follow vendor advisories.
Mitigation direction
- Check Red Hat and GNOME guidance for fixed package availability and applicability.
- Apply vendor-provided libsoup or libsoup3 updates when available for affected platforms.
- Reduce external exposure of services confirmed to use SoupServer where operationally feasible.
- Monitor logs and service health for abnormal persistent-connection behavior or DoS symptoms.
Validation and detection
- Inventory RHEL systems with libsoup or libsoup3 installed.
- Identify applications that embed or depend on libsoup SoupServer.
- Confirm whether those applications accept untrusted remote HTTP traffic.
- Track package status against Red Hat CVE guidance for each RHEL version.
- After updates, verify affected services remain stable and package versions changed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-444: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-1760 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://access.redhat.com/security/cve/CVE-2026-1760CVE reference · vdb-entry, x_refsource_REDHAT
- RHBZ#2435951CVE reference · issue-tracking, x_refsource_REDHAT
- https://gitlab.gnome.org/GNOME/libsoup/-/issues/475CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.