Security readout for executives and security teams
Plain-English summary
Erxes 0.22.3 and earlier can run attacker-controlled JavaScript in a user's browser if the user opens a malicious link or is redirected. This is not server compromise by itself, but it can expose user data or alter browser-visible actions. Sources state no known patch.
Executive priority
Prioritize within normal vulnerability management timelines unless Erxes is internet-facing or used by privileged staff. Business urgency rises if affected instances handle customer, support, or administrative workflows because browser-side code execution can undermine trust in those sessions.
Technical view
CVE-2021-32853 is CWE-79 cross-site scripting in npm erxes. CVSS 3.1 is 6.1: network reachable, low complexity, no privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure is likely limited to organizations running Erxes 0.22.3 or earlier, especially public-facing instances where users can be induced to open links. The source bundle does not identify other affected products or deployment modes.
Exploitation context
The victim must follow a malicious link or be redirected from a malicious website. CISA KEV is false in the source bundle, and no cited source states active exploitation. Treat exploitation evidence as unconfirmed.
Researcher notes
Evidence supports XSS, affected Erxes 0.22.3 and prior, and no known patch at disclosure. The bundle cites specific widget server and template code references, but does not provide enough detail to assert exploit prevalence, patch availability, or additional affected versions.
Mitigation direction
- Identify and prioritize any Erxes 0.22.3 or earlier deployments.
- Check Erxes vendor or project guidance for current remediation status.
- Restrict access to affected Erxes interfaces where feasible.
- Use browser and gateway controls to reduce risky redirects and links.
- Consider migration or upgrade planning if no supported fix exists.
Validation and detection
- Inventory npm erxes package versions in production and staging.
- Confirm whether any public Erxes interfaces are reachable.
- Review logs for suspicious redirects or unusual widget access patterns.
- Verify vendor advisories before declaring remediation complete.
- Document any compensating controls for unfixed deployments.
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-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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-32853 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://securitylab.github.com/advisories/GHSL-2021-103-erxes/CVE reference
- https://github.com/erxes/erxes/blob/f131b49add72032650d483f044d00658908aaf4a/widgets/server/index.ts#L54CVE reference
- https://github.com/erxes/erxes/blob/f131b49add72032650d483f044d00658908aaf4a/widgets/server/views/widget.ejs#L14CVE 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 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.