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CVE Record

CVE-2021-47920: WebMO Job Manager 20.0 Cross-Site Scripting via Search Parameters

WebMO Job Manager 20.0 contains a cross-site scripting vulnerability in search parameters that allows remote attackers to inject malicious script code. Attackers can exploit the filterSearch and filterSearchType parameters to perform non-persistent attacks including session hijacking and external redirects.

MediumCVSS 5.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

WebMO Job Manager 20.0 has a reflected cross-site scripting issue in search parameters. An attacker with some access could trick a user into interacting with a crafted request, potentially exposing session data or redirecting the user. This is not listed as known exploited in CISA KEV.

Executive priority

Treat as a targeted application-security cleanup item, not an emergency. Prioritize if WebMO 20.0 is internet-facing or used by privileged researchers. Remediation should follow vendor guidance because the provided sources do not name a specific patch version.

Technical view

CVE-2021-47920 is CWE-79 in WebMO Job Manager 20.0. The filterSearch and filterSearchType parameters are reported to allow non-persistent script injection. CVSS 3.1 is 5.4, with network access, low complexity, low privileges required, and user interaction required.

Likely exposure

Exposure is limited to organizations running WebMO Job Manager 20.0, especially where authenticated users can access the affected search functionality through a browser. The source bundle lists other versions as unaffected by default, but administrators should verify deployed versions against vendor guidance.

Exploitation context

Sources describe a remote reflected XSS requiring low privileges and user interaction. Potential impacts include session hijacking and external redirects. The source bundle includes an advisory tagged exploit, but there is no KEV listing and no cited evidence of active exploitation.

Researcher notes

The provided record identifies the vulnerable parameters and impact class but does not provide confirmed active exploitation or a named fixed release. Validate exposure safely in a controlled environment and avoid reproducing public exploit details against production systems.

Mitigation direction

  • Identify whether WebMO Job Manager 20.0 is deployed.
  • Check WebMO guidance for fixed versions or vendor-recommended mitigations.
  • Restrict access to the application to trusted users and networks where practical.
  • Educate users not to follow unexpected WebMO links.
  • Review session security controls and logout affected sessions if suspicious activity appears.

Validation and detection

  • Inventory WebMO Job Manager instances and confirm exact version.
  • Review access logs for unusual search parameter usage.
  • Confirm whether search inputs are encoded or filtered in the deployed build.
  • Check whether the instance is internet-accessible or restricted.
  • Monitor for user reports of redirects or unexpected browser behavior.
Prepared
Confidence
high
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

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.

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cve · low confidence lookup

CVE-2021-47920 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
5.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
4Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.4Medium
CVSS 3.1 vector shape for CVE-2021-47920Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
WebMO, LLCWebMO Job Manager20.0unaffected
Weakness

CWE details

CWE-79

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.