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CVE-2021-31811

21
FAUCET Score

CVE-2021-31811 is a denial-of-service vulnerability affecting Apache PDFBox versions 2.0.23 and prior, as well as products from Oracle and Fedora Project that incorporate these versions. A specially crafted PDF file can trigger an OutOfMemory exception, leading to application unavailability. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and resulting in high availability impact. 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
3.45%
Probability of exploitation in next 30 days
EPSS Percentile
87.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0345 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 (5)

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 IntegrationFixed in: pdfbox
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Fuse 7Fixed in: pdfbox

Vendor Advisories (2)

mavenGHSA-fg3j-q579-v8x4medium

Uncontrolled memory consumption

Jun 15, 2021
redhatCVE-2021-31811Low

pdfbox: OutOfMemory-Exception 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/rd4b6db6c3b8ab3c70f1c3bbd725a40920896453ffc2744ade6afd9fb%40%3Cnotifications.ofbiz.apache.org%3E
lists.apache.org / thread.html/re0cacd3fb337cdf8469853913ed2b4ddd8f8bfc52ff0ddbe61c1dfba%40%3Ccommits.ofbiz.apache.org%3E
lists.apache.org / thread.html/re3bd16f0cc8f1fbda46b06a4b8241cd417f71402809baa81548fc20e%40%3Cusers.pdfbox.apache.org%3E
Mailing ListVendor Advisory
lists.apache.org / thread.html/rf937c2236e6c79cdb99f76a70690dd345e53dbe0707cb506a202e43e%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
PatchVendor Advisory
oracle.com / /security-alerts/cpujul2021.html
Third Party Advisory
oracle.com / security-alerts/cpujul2022.html
oracle.com / security-alerts/cpuoct2021.html
Third Party Advisory
openwall.com / lists/oss-security/2021/06/12/2
Mailing ListThird Party Advisory