Security readout for executives and security teams
Plain-English summary
CVE-2026-1616 affects Red Hat’s Open Security Issue Management (OSIM) before v2025.9.0. A risky Nginx configuration concatenates request path and query string, allowing unauthenticated attackers to attempt path traversal through query parameters. The stated impact is high confidentiality risk, meaning sensitive files or data may be exposed if a vulnerable deployment is reachable.
Executive priority
Treat this as a high-priority confidentiality issue for any organization using OSIM. Prioritize externally reachable or broadly accessible deployments first. If OSIM is not deployed, business impact is likely none.
Technical view
The issue is CWE-22 path traversal in OSIM’s Nginx configuration, specifically involving `$uri$args` concatenation. The CVSS 3.1 score is 7.5: network-accessible, low complexity, no privileges, no user interaction, with high confidentiality impact and no stated integrity or availability impact. The CVE describes affected versions as OSIM prior to v2025.9.0.
Likely exposure
Exposure is most relevant for organizations running OSIM versions before v2025.9.0, especially if the service is reachable over a network. The source data does not identify specific deployment patterns, default exposure, or hosted service impact.
Exploitation context
No active exploitation is reported in the provided sources, and the CVE is not marked as CISA KEV. The vulnerability is plausibly attractive because it is unauthenticated, network-reachable, and targets confidentiality, but public exploit availability is not established here.
Researcher notes
The public record is concise. It names OSIM before v2025.9.0, CWE-22, CVSS 7.5, and PR #615. It does not provide exploit evidence, affected CPEs, detailed file paths, or operational indicators. Validate against the referenced GitHub change and official CVE records.
Mitigation direction
- Upgrade OSIM to v2025.9.0 or later where applicable.
- Review Red Hat OSIM PR #615 and vendor guidance for the exact configuration change.
- Restrict network access to OSIM until remediation is confirmed.
- Monitor OSIM and Nginx logs for suspicious traversal-like request patterns.
Validation and detection
- Inventory all OSIM deployments and record running versions.
- Flag any OSIM instance older than v2025.9.0.
- Review Nginx configuration for vulnerable `$uri$args` concatenation.
- Confirm the fix from PR #615 or vendor release guidance is present.
- Verify internet-facing exposure and prioritize reachable instances.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-1616 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
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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.
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:N/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/RedHatProductSecurity/osim/pull/615CVE 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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.