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deps: bump body-parser to ^2.3.0 to fix CVE-2026-12590 - #7390

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Mayvis:fix/body-parser-cve-2026-12590
Aug 22, 2026
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Phillip9587 merged 1 commit into
expressjs:masterfrom
Mayvis:fix/body-parser-cve-2026-12590

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@Mayvis

@Mayvis Mayvis commented Jul 22, 2026

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Summary

Bumps body-parser from ^2.2.1 to ^2.3.0 to remediate CVE-2026-12590 (GHSA-v422-hmwv-36x6).

body-parser >=2.0.0 <2.3.0 (and <1.20.6 on the 1.x line) fails open when
given an invalid limit option value: bytes.parse() returns null, which
silently disables request body size enforcement and allows a denial of service
via arbitrarily large payloads. body-parser 2.3.0 (expressjs/body-parser#698)
now throws on an invalid limit at parser initialization instead of ignoring it.

Express's existing ^2.2.1 range technically already permits 2.3.0, but
declaring ^2.3.0 makes the security intent explicit and ensures consumers
(and scanners like Trivy) resolve to the patched release.

Changes

  • package.json: body-parser ^2.2.1 → ^2.3.0
  • History.md: changelog entry under Unreleased → 🚀 Improvements

Testing

  • body-parser-backed middleware tests pass (211 passing): express.json, express.urlencoded, express.raw, express.text.

References

body-parser < 2.3.0 silently disables request body size enforcement
when given an invalid `limit` option value (bytes.parse() returns null),
allowing a denial of service via arbitrarily large payloads
(CVE-2026-12590 / GHSA-v422-hmwv-36x6). 2.3.0 throws on invalid `limit`
values at parser initialization instead of failing open.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

@Phillip9587 Phillip9587 left a comment

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LGTM, thanks!

@Phillip9587
Phillip9587 merged commit 8ba0c07 into expressjs:master Aug 22, 2026
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@Mayvis
Mayvis deleted the fix/body-parser-cve-2026-12590 branch September 10, 2026 03:25
@UlisesGascon UlisesGascon mentioned this pull request Sep 14, 2026
markharding pushed a commit to futo-org/Harbor that referenced this pull request Oct 15, 2026
This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
| [express](https://expressjs.com/) ([source](https://github.com/expressjs/express)) | [`5.2.1` → `5.3.0`](https://renovatebot.com/diffs/npm/express/5.2.1/5.3.0) | ![age](https://developer.mend.io/api/mc/badges/age/npm/express/5.3.0?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/express/5.2.1/5.3.0?slim=true) |

---

> ⚠️ **Warning**
>
> Some dependencies could not be looked up. Check the [Dependency Dashboard](issues/99) for more information.

---

### Release Notes

<details>
<summary>expressjs/express (express)</summary>

### [`v5.3.0`](https://github.com/expressjs/express/blob/HEAD/History.md#530)

[Compare Source](expressjs/express@v5.2.1...v5.3.0)

\=====

#### 🐞 Bug fixes

- Fixed HTTP header conflict between Content-Length and Transfer-Encoding in res.send - by [@&#8203;YuryShkoda](https://github.com/YuryShkoda) in [#&#8203;4893](expressjs/express#4893)

  Fixed the behavior of `res.send()` to prevent conflicts between `Content-Length` and `Transfer-Encoding` HTTP headers in responses. The `Content-Length` header in `res.send()` is now only added when a `Transfer-Encoding` header is not present, complying with the HTTP specification that states both headers should not coexist in the same response. ETag generation is unaffected by the presence of a `Transfer-Encoding` header - by [@&#8203;cuishuang](https://github.com/cuishuang) in [#&#8203;7459](expressjs/express#7459)

* Upgrade `qs` to `^6.16.0`, which fixes [CVE-2026-2391](https://www.cve.org/CVERecord?id=CVE-2026-2391) ([GHSA-w7fw-mjwx-w883](GHSA-w7fw-mjwx-w883)), [CVE-2026-82417](https://www.cve.org/CVERecord?id=CVE-2026-82417) ([GHSA-4mjr-xmp4-gh2g](GHSA-4mjr-xmp4-gh2g)) and [CVE-2026-82562](https://www.cve.org/CVERecord?id=CVE-2026-82562) ([GHSA-x5fp-wj9c-mxmx](GHSA-x5fp-wj9c-mxmx)): `arrayLimit` bypasses in comma parsing and a denial of service via an attacker-controlled `isBuffer` - by [@&#8203;davetashner](https://github.com/davetashner) in [#&#8203;7057](expressjs/express#7057) and [#&#8203;7478](expressjs/express#7478), and [@&#8203;cyphercodes](https://github.com/cyphercodes) in [#&#8203;7305](expressjs/express#7305)

* Upgrade `proxy-addr` to `^2.0.8`, which fixes [CVE-2026-90711](https://www.cve.org/CVERecord?id=CVE-2026-90711) - by [@&#8203;lazerg](https://github.com/lazerg) in [#&#8203;7474](expressjs/express#7474)

#### 🚀 Improvements

- Allow conditional revalidation for QUERY requests. `req.fresh` previously only validated freshness for GET and HEAD requests, so QUERY responses never returned 304 despite a matching validator. Since QUERY is a safe, idempotent, and cacheable method that supports conditional requests, it is now included in the freshness check - by [@&#8203;Cherry](https://github.com/Cherry) in [#&#8203;7366](expressjs/express#7366)

  ```js
  // QUERY /reports with If-None-Match: "12345"
  app.query('/reports', (req, res) => {
    res.set('ETag', '"12345"');
    res.send(results); // now responds 304 Not Modified
  });
  ```

- Improve HTML structure in `res.redirect()` responses when HTML format is accepted by adding `<!DOCTYPE html>`, `<title>`, and `<body>` tags for better browser compatibility - by [@&#8203;Bernice55231](https://github.com/Bernice55231) in [#&#8203;5167](expressjs/express#5167)

- When calling `app.render` with options set to null, the locals object is handled correctly, preventing unexpected errors and making the method behave the same as when options is omitted or an empty object is passed - by [AkaHarshit](https://github.com/AkaHarshit) in [#&#8203;6903](expressjs/express#6903)

  ```js
  app.render('index', null, callback); // now works as expected
  ```

- Upgrade `content-type` to `^2.0.0`, bringing a faster parser (\~1.5x quicker `Content-Type` parsing/formatting in `res.send()`) along with a behavior change: `res.send()` now keeps any existing parameters when adding the charset and no longer throws on a `Content-Type` that fails to parse. `type-is` is upgraded to `^2.1.0` as part of the same change - by [@&#8203;blakeembrey](https://github.com/blakeembrey) in [#&#8203;7234](expressjs/express#7234)

  ```js
  res.set('Content-Type', 'text/plain; foo=bar').send('hey');
  // -> Content-Type: text/plain; foo=bar; charset=utf-8
  ```

- The default error handler now logs the full error object instead of only its stack trace, so nested details such as `Error.cause` and library-specific properties (e.g. Sequelize's `parent`/`original`) are no longer swallowed - by [@&#8203;Nitin-Mohapatra](https://github.com/Nitin-Mohapatra) in [#&#8203;6464](expressjs/express#6464)

- Upgrade `content-disposition` to `^2.0.1`, which changes the `Content-Disposition` header emitted by `res.download()`, `res.attachment()`, and `res.sendFile()`: file names that are valid HTTP tokens are no longer wrapped in quotes. This is equivalent per RFC 6266, but applications asserting on the exact header bytes should update their expectations - by [@&#8203;blakeembrey](https://github.com/blakeembrey) in [#&#8203;7233](expressjs/express#7233)

  ```js
  res.attachment('user.html');
  // before -> Content-Disposition: attachment; filename="user.html"
  // after  -> Content-Disposition: attachment; filename=user.html
  ```

- Upgrade `body-parser` to `^2.3.0`, which fixes [CVE-2026-12590](https://www.cve.org/CVERecord?id=CVE-2026-12590) ([GHSA-v422-hmwv-36x6](GHSA-v422-hmwv-36x6)): an invalid `limit` option value caused request body size enforcement to be silently disabled (fail-open), allowing a denial of service via arbitrarily large payloads. Invalid `limit` values now throw at parser initialization instead of being ignored - by [@&#8203;Mayvis](https://github.com/Mayvis) in [#&#8203;7390](expressjs/express#7390)

#### ⚡ Performance

- Avoid duplicate Content-Type header processing in `res.send()` when sending string responses without an explicit Content-Type header - by [@&#8203;bjohansebas](https://github.com/bjohansebas) in [#&#8203;6991](expressjs/express#6991)

</details>

---

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---

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---

This PR has been generated by [Mend Renovate CLI](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0NC4xMzMuMCIsInVwZGF0ZWRJblZlciI6IjQ0LjE2NC41IiwidGFyZ2V0QnJhbmNoIjoiZGV2ZWxvcCIsImxhYmVscyI6WyJkZXBlbmRlbmNpZXMiLCJyZW5vdmF0ZSJdfQ==-->

Reviewed-on: https://code.futo.org/harbor/harbor/pulls/1812
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