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CVE-2021-31812

22
FAUCET Score

CVE-2021-31812 describes a denial-of-service vulnerability in Apache PDFBox, affecting versions 2.0.23 and prior 2.0.x releases, as well as products from Oracle and Fedora Project that incorporate PDFBox. This medium-severity vulnerability (CVSS 5.5) can be triggered by a specially crafted PDF file, leading to an infinite loop and resource exhaustion (availability impact). While the attack requires user interaction (UI:R) to open the malicious file, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, <= 2.0.23CPE matchmatch criteria
cpe:2.3:a:apache:pdfbox:*:*:*:*:*:*:*:*
33CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
34CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
14.2.0CPE matchmatch criteria
cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.2.0:*:*:*:*:*:*:*
14.3.0CPE matchmatch criteria
cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.3.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
3.05%
Probability of exploitation in next 30 days
EPSS Percentile
86.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0305 is in the 95th percentile among its peer group of 5,765 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

mavenpatch availablevia ghsa
Product: org.apache.pdfbox:pdfboxFixed in: 2.0.24
mavenpatch availablevia ghsa
Product: org.apache.pdfbox:pdfbox-parentFixed in: 2.0.24
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Integration
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Fuse 7Fixed in: pdfbox
redhatno patchvia redhat_api
Product: Red Hat Integration Camel K 1Fixed in: pdfbox

Vendor Advisories (2)

mavenGHSA-7grw-6pjh-jpc9medium

Infinite Loop in Apache PDFBox

Jun 15, 2021
redhatCVE-2021-31812Low

pdfbox: infinite loop while loading a crafted PDF file

Jun 12, 2021

References

lists.apache.org / thread.html/r132e9dbbe0ebdc08b39583d8be0a575fdba573d60a42d940228bceff%40%3Cnotifications.ofbiz.apache.org%3E
lists.apache.org / thread.html/r143fd8445e0e778f4a85187bd79438630b96b8040e9401751fdb8aea%40%3Ccommits.ofbiz.apache.org%3E
lists.apache.org / thread.html/r179cc3b6822c167702ab35fe36093d5da4c99af44238c8a754c6860f%40%3Ccommits.ofbiz.apache.org%3E
lists.apache.org / thread.html/r2090789e4dcc2c87aacbd87d5f18e2d64dcb9f6eb7c47f5cf7d293cb%40%3Cnotifications.ofbiz.apache.org%3E
lists.apache.org / thread.html/ra2ab0ce69ce8aaff0773b8c1036438387ce004c2afc6f066626e205e%40%3Cusers.pdfbox.apache.org%3E
Mailing ListVendor Advisory
lists.apache.org / thread.html/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb%40%3Cnotifications.ofbiz.apache.org%3E
lists.apache.org / thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba%40%3Ccommits.ofbiz.apache.org%3E
lists.apache.org / thread.html/rf251f6c358087107f8c23473468b279d59d50a75db6b4768165c78d3%40%3Cannounce.apache.org%3E
lists.apache.org / thread.html/rfe26bcaba564deb505c32711ba68df7ec589797dcd96ff3389a8aaba%40%3Cnotifications.ofbiz.apache.org%3E
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/7HHWJRFXZ3PTKLJCOM7WJEYZFKFWMNSV
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/MDJKJQOMVFDFIDS27OQJXNOYHV2O273D
oracle.com / security-alerts/cpuapr2022.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujan2022.html
PatchThird Party Advisory
oracle.com / security-alerts/cpujul2022.html
oracle.com / security-alerts/cpuoct2021.html
PatchThird Party Advisory
openwall.com / lists/oss-security/2021/06/12/1
Mailing ListThird Party Advisory