Security readout for executives and security teams
Plain-English summary
This flaw lets an unauthenticated attacker influence where a password reset link points. If a user clicks the poisoned reset email, the valid reset token can be exposed to the attacker, enabling account takeover. The impact is severe, but the supplied sources do not show known active exploitation.
Executive priority
Treat as urgent for exposed Grav systems because successful abuse can lead to administrator account takeover. Prioritize patching public sites and any deployment where password reset is enabled.
Technical view
Grav API plugin before 1.0.4 accepts a client-controlled admin_base_url in the forgot-password flow and only validates the URL scheme. It does not verify the host against the server origin. Referer or Origin headers may also influence the base URL, causing reset emails to include attacker-controlled links.
Likely exposure
Internet-facing Grav sites using the vulnerable Grav API plugin password-reset endpoint are the main concern. Exposure depends on whether grav-plugin-api before 1.0.4 is installed and the forgot-password route is reachable.
Exploitation context
The source bundle describes network exploitation without authentication, low complexity, and required user interaction. Account takeover occurs only if the victim follows the poisoned reset link. KEV status is false, and no cited source confirms active exploitation.
Researcher notes
Evidence supports improper URL origin validation in the reset workflow, mapped to CWE-601. The affected version boundary is stated as before 1.0.4. Do not assume exploitation in the wild without new KEV or advisory evidence.
Mitigation direction
- Upgrade grav-plugin-api to version 1.0.4 or later.
- Review the GitHub advisory for vendor-specific guidance.
- Restrict or monitor access to the forgot-password API endpoint until upgraded.
- Review recent password reset activity for suspicious hosts or unexpected reset flows.
Validation and detection
- Inventory Grav deployments and confirm grav-plugin-api versions.
- Check whether POST /api/v1/auth/forgot-password is reachable externally.
- Verify reset emails use the legitimate site origin only.
- Review logs for unusual Origin, Referer, or admin_base_url values.
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-601: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-61451 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
- 9.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
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
2 official scoresWe 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:R/S:C/C:H/I:H/A:H2.86VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
9.4CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Base CVSS 3.1 score
9.6CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
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
- GitHub Security Advisory (GHSA-5xc4-j99p-cp4m)CVE reference, VulnCheck · vendor-advisory
- VulnCheck Advisory: Grav before 1.0.4 Password Reset Token Poisoning via admin_base_urlCVE reference, VulnCheck · third-party-advisory
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.