LiveActive security incident?Get immediate response
CVE Record

CVE-2021-32852: countly-server vulnerable to Cross-site Scripting

Countly, a product analytics solution, is vulnerable to cross-site scripting prior to version 21.11 of the community edition. The victim must follow a malicious link or be redirected there from malicious web site. The attacker must have an account or be able to create one. This issue is patched in version 21.11.

MediumCVSS 5.4Not KEV-listedUpdated
Discuss exposureBack to CVEs
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

Countly community edition countly-server before version 21.11 has a cross-site scripting flaw. An attacker with a Countly account, or the ability to create one, could target a user who follows a malicious link or is redirected from another site. The documented impact is limited confidentiality and integrity risk, not service outage.

Executive priority

Treat this as a scheduled remediation item unless Countly is internet-facing, self-registration is enabled, or privileged users are likely phishing targets. It is not documented as actively exploited, but it can affect user trust and session-adjacent workflows.

Technical view

CVE-2021-32852 is CWE-79 reflected or link-triggered cross-site scripting in Countly community edition before 21.11. CVSS 3.1 is 5.4: network reachable, low complexity, low privileges required, user interaction required, changed scope, low confidentiality and integrity impact, no availability impact. Version 21.11 is identified as the patch.

Likely exposure

Exposure is most likely in self-hosted Countly community edition deployments running versions before 21.11, especially where user registration is open or many low-privilege accounts exist. The sources do not claim enterprise edition exposure.

Exploitation context

The source bundle does not show KEV listing or active exploitation. Exploitation requires an attacker account or account creation capability, plus a victim following a malicious link or redirect. This makes phishing or social engineering a key prerequisite.

Researcher notes

Evidence supports Countly community edition before 21.11, with patch availability in 21.11. The provided sources identify prerequisite attacker privileges and victim interaction, but do not provide evidence of active exploitation, broad product-family impact, or additional mitigations beyond upgrading and vendor review.

Mitigation direction

  • Upgrade Countly community edition to version 21.11 or later.
  • Review Countly release notes and GitHub Security Lab advisory for vendor guidance.
  • Restrict unnecessary account creation where operationally possible.
  • Warn Countly users against unexpected links targeting the application.

Validation and detection

  • Inventory Countly community edition deployments and record exact versions.
  • Flag any Countly deployment older than version 21.11.
  • Check whether public or low-friction account creation is enabled.
  • Review access logs for suspicious link-driven user activity around Countly pages.
Prepared
Confidence
high
Sources
6

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-2021-32852 mapping review

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

Open ATT&CK lookup
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
5Source 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-2021-32852Attack 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
Countlycountly-server21.11Listed
Weakness

CWE details

CWE-79

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