Cross-Site Scripting (XSS) in PrinterLogic Web Stack (CVE-2021-42639)
Summary
Cross-site scripting in PrinterLogic Web Stack (CVE-2021-42639). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
PrinterLogic Web Stack versions 19.1.1.13 SP9 and below are vulnerable to multiple reflected cross site scripting vulnerabilities. Attacker controlled input is reflected back in the page without sanitization.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2021-42639 has been found in PrinterLogic Web Stack.
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "PrinterLogic Web Stack CVE-2021-42639" on the vendor's site.
CVE-2021-42639 (PrinterLogic Web Stack) — CWE-79 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Cross-site scripting (XSS) (CWE-79) exists in PrinterLogic Web Stack.
Check the vendor advisory for the affected versions of PrinterLogic Web Stack.
Severity: Medium (CVSS 6.1/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで PrinterLogic Web Stack を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory securityaffairs.co
- advisory thecyberthrone.in
- advisory securityweek.com
- exploit yahooinc.com
- patch printerlogic.com
- web portswigger.net
- web printerlogic.com
- web nvd.nist.gov
- web printerlogic.com
- web yahooinc.com
- web github.com