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CVE Record

CVE-2021-46679: Vulnerability XSS in service elements

A XSS vulnerability exist in Pandora FMS version 756 and below, that allows an attacker to perform javascript code executions via service elements.

MediumCVSS 4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2021-46679 is a cross-site scripting issue in Pandora FMS service elements. A highly privileged user could cause JavaScript execution, potentially affecting confidentiality, integrity, or availability at a limited level. The public bundle does not show known active exploitation or a confirmed patch version.

Executive priority

Treat this as a moderate-priority maintenance and access-control issue, not an emergency based on current evidence. Prioritize if Pandora FMS is business-critical, broadly administered, or running v756 or earlier in production.

Technical view

The issue is CWE-79 XSS in Pandora FMS version 756 and below, tied to service elements. CVSS 3.1 is 4.0 with local access, low complexity, high privileges, and required user interaction. Scope is unchanged, with low impact to confidentiality, integrity, and availability.

Likely exposure

Exposure is most relevant for organizations running Pandora FMS v756 or earlier, especially where many administrators or operators can manage service elements. The CVSS vector indicates exploitation requires high privileges and user interaction, lowering broad internet-scale risk.

Exploitation context

The provided sources do not indicate CISA KEV listing or active exploitation. The vulnerability requires an already highly privileged context and user interaction, so insider misuse, compromised admin accounts, or shared operations accounts are more plausible concerns than unauthenticated external attacks.

Researcher notes

Evidence is sparse beyond the CVE description, CVSS vector, CWE-79 classification, and vendor/INCIBE references. Do not assume affected components beyond service elements, active exploitation, or a specific fixed version unless confirmed by Pandora FMS guidance.

Mitigation direction

  • Inventory Pandora FMS deployments and flag instances running version 756 or earlier.
  • Check Pandora FMS advisories for a fixed release or vendor-specific remediation.
  • Restrict service element administration to trusted high-privilege users only.
  • Monitor for unexpected service element changes until remediation is confirmed.

Validation and detection

  • Confirm installed Pandora FMS versions against the affected version statement.
  • Review which users can create or modify service elements.
  • Check vendor CVE guidance for remediation status before changing production systems.
  • Review logs for unusual service element edits or administrator activity.
Prepared
Confidence
medium
Sources
4

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.

Open ATT&CK lookup
cve · low confidence lookup

CVE-2021-46679 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
4 (3.1)
Known Exploited
No
Published

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

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
3Timeline events
2ADP providers
3Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

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
4CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L0.63.4ARTICA

Vulnerability scoring details

Base CVSS 3.1 score

4Medium
CVSS 3.1 vector shape for CVE-2021-46679Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

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

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

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Artica PFMSPandora FMSv756Listed
Weakness

CWE details

CWE-79

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