EUVD-2026-58031
GHSA-q9r6-h8cx-q7qp
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Scope elevated to S:C because forged requests cross a trust boundary into separate upstream Alertmanager and Prometheus systems; all other metrics align directly with the CSRF pattern requiring no attacker privileges but active victim interaction.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
basecamp/upright at commit efe4f2e5254ac6e57e45d2261804cca74dbbca3f disables Rails CSRF protection for its Alertmanager and Prometheus proxy controllers. An unauthenticated attacker can induce a logged-in user's browser to submit requests that are forwarded to enabled upstream write or management endpoints, such as creating an Alertmanager silence or requesting a Prometheus reload. The final impact depends on the APIs enabled by the upstream services.
AnalysisAI
Cross-site request forgery in basecamp/upright's Alertmanager and Prometheus proxy controllers allows unauthenticated attackers to exploit authenticated user sessions by inducing browser-submitted requests that bypass Rails CSRF protection entirely. At the specific commit efe4f2e5254ac6e57e45d2261804cca74dbbca3f, both proxy controllers skip the Rails authenticity token check, exposing upstream monitoring write and management APIs - including Alertmanager silence creation and Prometheus configuration reload - to attacker-controlled actions without the victim's awareness. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires all three of the following conditions: (1) the target Upright deployment incorporates commit efe4f2e5254ac6e57e45d2261804cca74dbbca3f or any revision that includes the CSRF-skip directive in the AlertmanagerProxyController or PrometheusProxyController; (2) the upstream Alertmanager or Prometheus services have write or management endpoints enabled and reachable through the proxy - specifically, endpoints such as POST /alertmanager/api/v2/silences for silence creation or POST /-/reload for Prometheus configuration reload must be proxied; and (3) an authenticated Upright user can be induced to visit an attacker-controlled webpage while their session is active, satisfying the UI:R requirement in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.4 Medium score reflects the UI:R requirement - a victim must be socially engineered into visiting an attacker-controlled page - and the bounded direct confidentiality impact inherent to CSRF. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | No vendor-released patch or fixed version has been confirmed at time of analysis; affected versions should be assessed against the upstream repository at https://github.com/basecamp/upright for any remediation commits following the disclosure. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
Command injection in LiteLLM 1.18.10 lets attackers who can configure MCP (Model Context Protocol) servers supply arbitr
SQL injection in AzuraCast's backup restore flow (versions up to and including 0.23.7) lets an attacker achieve privileg
Arbitrary file read in Yu AI Code Mother v4.3 lets anonymous, remote attackers retrieve files outside the intended previ
Remote code execution in APScheduler (all versions through 3.10.x and 4.0.0a5) is achievable when applications deseriali
Remote code execution in the Exim mail transfer agent (versions before 4.99.3) built against certain GnuTLS configuratio
SQL injection in EasyAppointments <=1.5.1 allows unauthenticated attackers to extract and modify database contents via t
Unauthenticated remote OS command injection in MeiG Smart FORGE_SLT711 cellular gateway firmware MDM9607.LE.1.0-00110-ST
Unauthenticated API access in LalanaChami Pharmacy Management System (commit 5c3d028) allows remote attackers to dump al
Privilege escalation via broken access control in Citrix Cloud (through 2025-11-10) lets a user holding only read-only p
go-wind-cms (GoWind) before 1.0.0 exposes all administrative APIs to any authenticated user because NewAuthorizer() retu
Giflib 5.2.2 contains a buffer overflow in the EGifGCBToExtension function that fails to validate allocated memory when
Denial of service in GPAC's MP4Box multimedia tool (versions before 26.02.0) arises from a use-after-free in the gf_sei_
Same weakness CWE-352 – Cross-Site Request Forgery (CSRF)
View allShare
External POC / Exploit Code
Leaving vuln.today