Security readout for executives and security teams
Plain-English summary
CVE-2018-25026 affects older Rust applications using actix-web before 0.7.15. The flaw can mark data as safe to send between threads when it is not, which can break Rust's memory-safety guarantees and cause memory corruption.
Executive priority
Treat this as a dependency hygiene issue with potentially serious technical impact. Prioritize assessment for internet-facing or high-trust Rust services, but avoid emergency claims unless your inventory confirms vulnerable actix-web usage.
Technical view
The advisory describes a Rust soundness issue in actix-web before 0.7.15: adding the Send marker trait to objects that cannot be safely transferred between threads. This may allow unsafe cross-thread behavior and memory corruption. CVE metadata does not provide CVSS, CWE, CPE, or detailed exploitability context.
Likely exposure
Exposure is likely limited to Rust services or applications that directly or transitively depend on actix-web versions before 0.7.15. The source bundle does not identify specific downstream products, platforms, or deployment patterns.
Exploitation context
The source bundle does not show active exploitation, and the CVE is not marked as CISA KEV. No public exploit status is established by the supplied sources.
Researcher notes
The available evidence is sparse: no CVSS, CWE, exploit detail, or affected CPEs are supplied. The key technical concern is Rust type-system unsoundness around Send leading to memory corruption in actix-web before 0.7.15.
Mitigation direction
- Inventory Rust projects for actix-web dependencies below 0.7.15.
- Upgrade actix-web to 0.7.15 or later where supported.
- Review RustSec guidance for any project-specific constraints.
- Rebuild and redeploy affected services after dependency updates.
- If upgrading is blocked, ask maintainers for vendor-supported guidance.
Validation and detection
- Check Cargo.lock or SBOM data for actix-web versions below 0.7.15.
- Confirm no transitive dependency reintroduces a vulnerable actix-web version.
- Verify deployed artifacts were rebuilt with the corrected dependency.
- Run normal regression tests for affected Rust services.
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
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CVE-2018-25026 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://rustsec.org/advisories/RUSTSEC-2018-0019.htmlCVE reference · x_refsource_MISC
- https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/actix-web/RUSTSEC-2018-0019.mdCVE reference · x_refsource_MISC
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.