POC for CVE-2026-46529 – RCE via PDF argv injection
A new proof-of-concept exploit has been developed for a vulnerability (CVE-2026-46529) in PDF viewers like atril and evince. This exploit allows arbitrary code execution through a crafted PDF file by utilizing argv injection techniques. The attack can be executed simply by clicking anywhere on the rendered PDF page, making it particularly dangerous for users.
- ▪The exploit triggers arbitrary code execution when a user clicks on a crafted PDF file.
- ▪It uses a technique that allows the attacker to execute code without needing to know the victim's filesystem structure.
- ▪The vulnerability is linked to how the ev_spawn() function processes command line arguments from the PDF.
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Story provenance
Source · retrieval · rights · ranking — open for full record
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | GitHub |
| Canonical URL | https://github.com/N1et/CVE-2026-46529 |
| Publication time | Fri, 22 May 2026 06:45:05 +0000 |
| Retrieval time | 2026-05-22T07:02:00.842Z |
| Last seen | 2026-05-22T07:02:00.842Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | BbJgBLjYEhmu |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
RCE via PDF argv injection (CVE-2026-46529) (atril/xreader/evince) Working proof-of-concept for the argv injection in ev_spawn() (shell/ev-application.c). A single click anywhere on the rendered page of a crafted PDF triggers arbitrary code execution as the user running the viewer. This release uses the %f-substitution technique: the dlopen target path is discovered by the viewer itself at runtime, so the attacker needs zero knowledge of where the polyglot lands on the victim's filesystem (no username, no $HOME, no download directory). POC Screen.Recording.2026-05-15.at.02.28.19.mp4 What's in this bundle File Purpose exploit.sh One-shot wrapper: compile + build polyglot in a single command. evil_gtk_module.c Source of the payload.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.