Security readout for executives and security teams
A flaw in Go's HTTP server handling can let front-end and back-end servers disagree about where one request ends. In affected deployments, that disagreement may allow request smuggling, which can bypass controls or mix attacker-controlled traffic with another user's request path. Exposure is most likely for internet-facing Go services using net/http behind a proxy, load balancer, gateway, or other HTTP server that parses chunked requests differently. Evidence provided identifies Go standard library net/http/internal versions from 0 through 1.24.0-0 as affected. Treat this as urgent for externally exposed Go services behind proxies or gateways. The issue can affect trust boundaries at the HTTP layer and has a critical CVSS score, but the supplied evidence does not confirm active exploitation. Mitigation focus: Review official Go advisory GO-2025-3563 and upgrade to the fixed Go release it identifies.; Rebuild and redeploy Go services after updating the toolchain or standard library.; Check vendor advisories for appliances or products bundling affected Go components..
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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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-2025-22871 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
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
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.
SSVC decision data
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:H/I:H/A:N3.95.2CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://go.dev/cl/652998CVE reference, Go
- https://go.dev/issue/71988CVE reference, Go
- https://groups.google.com/g/golang-announce/c/Y2uBTVKjBQkCVE reference, Go
- https://pkg.go.dev/vuln/GO-2025-3563CVE reference, Go
- https://cert-portal.siemens.com/productcert/html/ssa-783943.htmlCVE reference, siemens-SADP
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.