EUVD-2026-57695
GHSA-6f7m-6567-58mj
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Reachable remotely when an app renders untrusted HTML (AV:N/AC:L/PR:N/UI:N); impact is local file read and file write (C:H/I:H) with no clear availability effect (A:N), lowering it below NVD's 9.8.
Primary rating from Vendor (CPANSec).
CVSS VectorVendor: CPANSec
Lifecycle Timeline
4DescriptionCVE.org
PDF::WebKit versions through 1.2 for Perl allow argument injection into wkhtmltopdf via meta tags in the source document.
For an HTML string or file source, the constructor collects every <meta name="pdf-webkit-KEY" content="VALUE"> element in the document head through _pdf_webkit_meta_tags and turns each one into a wkhtmltopdf command line option. KEY is normalized to an option name matching --[a-z0-9-]+ but is not checked against an allow list, VALUE is passed through unchanged as the argument that follows it, and a VALUE of "yes" emits the option as a bare flag. BUILD merges the meta derived options last, so they also override the module defaults and the options passed to new. Switches such as --enable-local-file-access and --cookie-jar are reachable this way. The renderer is executed with an argument list rather than a shell command, so this is argument injection and not shell injection.
Any caller that renders untrusted HTML lets the document choose the renderer's options and override those set by the application, including options that read local files into the resulting PDF or write to a chosen path. A URL source is not scanned, and the scan is skipped when XML::LibXML, a recommended dependency, is not installed.
AnalysisAI
Argument injection in PDF::WebKit through version 1.2 (Perl module, CPE mithaldu:pdf::webkit) lets an attacker who controls the source HTML dictate the wkhtmltopdf command-line options used for rendering. Because meta tags of the form <meta name="pdf-webkit-KEY" content="VALUE"> are converted into renderer switches without an allow-list and are merged last, a malicious document can enable options like --enable-local-file-access or --cookie-jar to read local files into the output PDF or write to attacker-chosen paths. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the target application renders attacker-controlled HTML content (an HTML string or file source, NOT a URL source) through PDF::WebKit, and that the meta-tag scan runs - which it does when the recommended dependency XML::LibXML is installed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | NVD rates this CVSS 9.8 (AV:N/AC:L/PR:N/UI:N/C:H/I:H/A:H), but that headline number should be read against the actual precondition: the flaw is only reachable when an application renders attacker-controlled HTML through PDF::WebKit - a design decision of the consuming app, not a default of the library, so exposure is conditional rather than universal. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade PDF::WebKit beyond 1.2 to the fixed release and apply the vendor patch published at https://security.metacpan.org/patches/P/PDF-WebKit/1.2/CVE-2026-16770-r1.patch (Patch available per vendor advisory; an exact fixed version tag beyond 1.2 is not stated in the provided data, so confirm the released version on CPAN before deploying). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems and applications running PDF::WebKit and document their current versions and data inputs; establish an inventory of which systems process untrusted or user-supplied HTML. …
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IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to execute arbitrary code or cause a denial
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to execute arbitrary code or cause a denial
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to execute arbitrary code or cause a denial
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to execute arbitrary code or cause a denial
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to execute arbitrary code or cause a denial
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to execute arbitrary code or cause a denial
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to execute arbitrary code or cause a denial
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to execute arbitrary code or cause a denial
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to execute arbitrary code or cause a denial
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to cause a denial of service or possibly ha
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to cause a denial of service or possibly ha
IrfanView version 4.44 (32bit) with PDF plugin version 4.43 allows attackers to cause a denial of service or possibly ha
Same technique Code Injection
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External POC / Exploit Code
Leaving vuln.today