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  4. CVE 2026 78192 webdyne versions from 2022 before 3022 for perl
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-78192

WebDyne versions from 2.022 before 3.022 for Perl disclose application source to unauthenticated clients via the viewer in the default index pageCVE-2026-78192

Answer in brief

CVE-2026-78192 records a Unknown severity vulnerability in WebDyne versions from 2.022 before 3.022 for Perl disclose application source to unauthenticated clients via the viewer in the default index page. The current sources do not mark it as known exploited. The current feed maps WebDyne (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 31, 2026Updated Oct 31, 2026Source checked Oct 31, 2026First seen by HOL Oct 31, 2026Material review Oct 31, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps WebDyne (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
WebDynegeneric>=2.022 <3.0223.022

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for WebDyne.
  2. 2Review the reported fix. Source-reported solution: Upgrade to WebDyne 3.022 or later.

Evidence timeline and material changes

  1. Published upstream

    Oct 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 31, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 31, 2026

Sources and claim methodology

  • Source referencemetacpan.org
Upstream source description

WebDyne versions from 2.022 before 3.022 for Perl disclose application source to unauthenticated clients via the viewer in the default index page. WebDyne's wrapper scripts, such as webdyne.psgi, enable the built-in index page by default. Its source viewer returns files under the document root named in the source parameter of an HTMX request, including .psp, .pm and .pl files. A remote attacker can read the application's Perl code, including the __PERL__ blocks of .psp pages and any credentials they hold.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WebDyne versions from 2.014 before 3.022 for Perl issue session cookies without the Secure, HttpOnly and SameSite attributesSame webdyne package
  • WebDyne versions from 3.007 before 3.022 for Perl execute .psp files outside the document root via path traversal in the PSGI API route fallbackSame webdyne package
  • WebDyne versions from 2.014 before 3.022 for Perl reflect request parameters unescaped into form field values, allowing cross-site scriptingSame webdyne package
  • WebDyne versions from 2.031 before 3.022 for Perl execute files with .psp anywhere in the name as Perl pagesSame webdyne package

Record context

Vulnerability class
Arbitrary File Read
EPSS
Not reported
CWE IDs
CWE-540, CWE-1188
Source
CVE List V5
Source checked
Oct 31, 2026
References
1 linked source
Open source record