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CVE-2026-91104 tracks multiple externally reported vulnerabilities in HP Linux Imaging and Printing (HPLIP) components. HP remediated the issues, but the affected components, vulnerable functions, versions, and individual vulnerability mechanisms are not specified. Depending on the component and exploitation conditions, the issues may permit remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This 11-file Python repository is a mass HPLIP surface scanner and research exploit driver for CVE-2026-91097 through CVE-2026-91106. `poc.py` is the primary CLI entry point: it accepts an individual target or target list, concurrently scans selected ports, writes JSONL results, and optionally runs CVE-class-specific exploit attempts. `cve_catalog.py` defines the affected-version threshold (3.26.6), CVE metadata, and filtering logic. `hplip_probes.py` implements TCP reachability checks plus hpssd, IPP/CUPS HTTP, and JetDirect/PJL fingerprints. `fofa_to_list.py` converts FOFA exports into normalized host:port input lists. Exploit logic is in `hplip_exploit.py`. For the claimed hpssd command-injection class, it sends a SOAP/XML EmailEvent whose email field injects an operator-provided command and a marker, then checks returned text for the marker or `uid=`/`gid=` output. For heap-related classes on raw TCP services, it sends an oversized XML field and only treats reset/error behavior as a weak crash indication. For PAPPL/HPLIP Printer Application services, it discovers an IPP printer URI and submits an IPP Print-Job with the crafted PWG raster built by `pappl_raster.py`; `pappl_ipp.py` provides the minimal binary IPP encoder. The code itself acknowledges that the PAPPL raster path is research-only, does not yield HTTP shell output, and cannot confirm RCE. The project is not part of Metasploit, Nuclei, or another recognized exploit framework. Its active network payloads make it more than a detection script, but its exploitation is basic and mostly unverified: command execution relies on a legacy service behavior, while the heap/PAPPL paths are crash or acceptance probes without a reliable control-flow/RCE chain.
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7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown
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A vulnerability identified as CVE-2026-91104 affecting Debian Linux versions 12.0, 13.0, and 14.0. The supplied CVSS v4 vector describes network-accessible, unauthenticated exploitation with high impact to confidentiality, integrity, and availability; however, the supplied CVSS v3 vector conflicts by describing local access and low privileges required.
A vulnerability advisory affecting HP Linux Imaging and Printing (HPLIP) components. The advisory states that the affected flaws could enable remote code execution, privilege escalation, denial of service, information disclosure, or unauthorized file modification under certain conditions, but does not map a specific impact to CVE-2026-91104.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.