Security readout for executives and security teams
Plain-English summary
CVE-2021-25959 is a reflected XSS issue in openCRX password reset functionality. A malicious link or interaction could make a user’s browser run attacker-supplied JavaScript in the openCRX context, risking limited data exposure or unauthorized actions as that user.
Executive priority
Prioritize remediation in the next normal patch cycle, faster for public-facing openCRX systems. This is not evidenced as actively exploited, but it can affect user trust and session integrity if abused through phishing or targeted user interaction.
Technical view
OpenCRX versions v4.0.0 through v5.1.0 are reported vulnerable to CWE-79 through unsanitized password reset parameters. The CVSS 3.1 score is 6.1, with network attack vector, low complexity, no privileges required, user interaction required, changed scope, and low confidentiality and integrity impact.
Likely exposure
Exposure is most likely where openCRX v4.0.0 through v5.1.0 is deployed and password reset pages are reachable. The bundle’s affected entry specifically names org.opencrx opencrx-core-config 4.0.0, so teams should verify exact installed versions and components.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires user interaction and depends on the vulnerable password reset workflow. Treat internet-facing or externally accessible openCRX portals as higher priority for review.
Researcher notes
Evidence supports reflected XSS in password reset parameters, not remote code execution or authentication bypass. The source bundle includes a broad version range and one specific affected package entry, so product-version mapping should be validated before declaring systems affected or clean.
Mitigation direction
- Check openCRX vendor guidance and the referenced fixing commit.
- Upgrade openCRX beyond affected versions where vendor-supported releases are available.
- Restrict access to password reset functionality if exposure cannot be promptly remediated.
- Apply standard XSS defenses for input handling and output encoding in custom deployments.
Validation and detection
- Inventory openCRX deployments and confirm exact application versions.
- Confirm whether password reset functionality is externally reachable.
- Review application code or release history for the referenced commit.
- Run authorized regression testing for reflected XSS in the reset workflow.
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-79: 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-2021-25959 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
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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:R/S:C/C:L/I:L/A:N2.82.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25959CVE reference · x_refsource_MISC
- https://github.com/opencrx/opencrx/commit/14e75f95e5f56fbe7ee897bdf5d858788072e818CVE 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.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.