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CVE Record

CVE-2025-68859: WordPress Syntax Highlighter Compress plugin <= 3.0.83.3 - Reflected Cross Site Scripting (XSS) vulnerability

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in agmorpheus Syntax Highlighter Compress syntax-highlighter-compress allows Reflected XSS.This issue affects Syntax Highlighter Compress: from n/a through <= 3.0.83.3.

HighCVSS 7.1Not KEV-listedUpdated
Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

A WordPress plugin used for syntax highlighting has a reflected cross-site scripting vulnerability. An attacker would need to trick a user into opening a crafted link or request. Successful exploitation could run attacker-controlled script in the user’s browser in the site context, potentially affecting confidentiality, integrity, and availability at a limited level.

Executive priority

Prioritize review for internet-facing WordPress sites using this plugin. The vulnerability is high severity, but known exploitation is not supported by the supplied sources. Treat as a timely hygiene and exposure-reduction task.

Technical view

CVE-2025-68859 is a CWE-79 reflected XSS issue in agmorpheus Syntax Highlighter Compress for WordPress, affecting versions through 3.0.83.3. The CVSS 3.1 score is 7.1 with network access, low complexity, no privileges required, user interaction required, and changed scope.

Likely exposure

Exposure is likely limited to WordPress sites that have the Syntax Highlighter Compress plugin installed and active at version 3.0.83.3 or earlier. Public-facing sites may be more attractive targets, but user interaction is required.

Exploitation context

The provided sources do not report active exploitation, and the CVE is not listed as KEV in the supplied data. Exploitation would generally require social engineering or another method to get a user to trigger a malicious request.

Researcher notes

Evidence is limited to the CVE record and Patchstack database entry. The affected range is stated as through 3.0.83.3, but no specific fixed version is provided in the supplied bundle. Avoid assuming patch availability without checking vendor guidance.

Mitigation direction

  • Inventory WordPress sites for the Syntax Highlighter Compress plugin.
  • If installed, confirm whether the version is 3.0.83.3 or earlier.
  • Check the plugin vendor or Patchstack advisory for an official fixed version or guidance.
  • Disable or remove the plugin where it is not required.

Validation and detection

  • Review WordPress plugin inventories across production and staging sites.
  • Verify the installed plugin version against the affected range.
  • Check security advisories for updated remediation details.
  • Monitor web and application logs for suspicious reflected-XSS indicators.
Prepared
Confidence
medium
Sources
3

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-2025-68859 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
High
CVSS
7.1 (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: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
0Timeline events
0ADP providers
2Source 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
7.1CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L2.83.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

7.1High
CVSS 3.1 vector shape for CVE-2025-68859Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/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
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
agmorpheusSyntax Highlighter Compresssyntax-highlighter-compress, 0unaffected
Weakness

CWE details

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

CWE-79 · source CWE mapping

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.