oxidize-pdf: NaN/inf bypass in colour content-stream emission causes PDF rejection (DoS)

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

4.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Impact oxidize-pdf defines Color as a pub enum with public tuple-struct variants Rgb(f64, f64, f64), Gray(f64), and Cmyk(f64, f64, f64, f64). The constructors Color::rgb, Color::gray, and Color::cmyk clamp incoming components to [0.0, 1.0], but because the variants are pub, callers can construct values directly without going through the constructors: rust let safe = Color::rgb(f64::NAN, 0.5, 0.5); // clamps NaN to 0.0 let attack = Color::Rgb(f64::NAN, 0.5, 0.5); // bypasses clamp Color: Copy allows the non-finite value to propagate freely through API surfaces and serialisation. When such a value reaches a content-stream emitter, the writer formats it via format!("{:.3}", v). The Rust standard library renders f64::NAN as "NaN", f64::INFINITY as "inf", and f64::NEGINFINITY as "-inf" — none of which are valid PDF numeric tokens per ISO 32000-1 §7.3.3: ▎ A numeric object shall be represented by one or more decimal digits with an optional sign and a leading, trailing, or embedded PERIOD.…

Published by the source

11 May 2026, 14:53 UTC

Last modified by the source

11 May 2026, 15:04 UTC

Source last checked

26 Oct 2026, 13:41 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-88q9-cmp2-c2vq

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-88q9-cmp2-c2vq

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# Patch Next advisory brief: GHSA-88q9-cmp2-c2vq

Advisory: oxidize-pdf: NaN/inf bypass in colour content-stream emission causes PDF rejection (DoS)
IDs: GHSA-88q9-cmp2-c2vq
Record: https://patchnext.com/advisories/ghsa-88q9-cmp2-c2vq (revision 2, source checked 26 Oct 2026, 13:41 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: oxidize-pdf 0.5.0; oxidizepdf.net 0.8.0; oxidize-pdf 2.6.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI oxidize-pdf: affected <= 0.4.3; fixed in 0.5.0
- NuGet oxidizepdf.net: affected <= 0.7.1; fixed in 0.8.0
- crates.io oxidize-pdf: affected <= 2.5.7; fixed in 2.6.0

## Suggested inspection (read-only)
- `python -m pip show oxidize-pdf`: prints the installed version. Run with the environment that serves production active.
- NuGet oxidizepdf.net: check the installed version with your package manager.
- crates.io oxidize-pdf: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on oxidize-pdf, oxidizepdf.net.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-88q9-cmp2-c2vq (OSV record GHSA-88q9-cmp2-c2vq lists affected ranges: crates.io oxidize-pdf >=0 =0 =0 <0.5.0 (fixed))
- Verified: https://github.com/advisories/GHSA-88q9-cmp2-c2vq (GitHub-reviewed advisory GHSA-88q9-cmp2-c2vq lists affected ranges: crates.io oxidize-pdf >=0 =0 =0 <=0.4.3)

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