Skip to main content
No exploitation reportedFix available

CVE-2018-9918

No exploitation reported by the sources we read.

  • Published2018-04-10
  • WeaknessCWE-674

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

libqpdf.a in QPDF through 8.0.2 mishandles certain "expected dictionary key but found non-name object" cases, allowing remote attackers to cause a denial of service (stack exhaustion), related to the QPDFObjectHandle and QPDF_Dictionary classes, because nesting in direct objects is not restricted.

Timeline

dates in UTC
  1. 2018-04-1018:29CVE publishedNVD

Versions per branch

NVD
Canonical ubuntu linux
BranchAffectedFixed in
14.4= 14.04no fix published
16.4= 16.04no fix published
17.10= 17.10no fix published
Qpdf project qpdf
BranchAffectedFixed in
8.0≤ 8.0.2no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • qpdfUbuntu:16.04:LTSall versions · fixed in 8.0.2-3~16.04.1
  • qpdfUbuntu:14.04:LTSall versions · fixed in 8.0.2-3~14.04.1
  • qpdfSUSE:Linux Enterprise Software Development Kit 12 SP5all versions · fixed in 7.1.1-3.11.1
  • qpdfSUSE:Linux Enterprise Server for SAP Applications 12 SP5all versions · fixed in 7.1.1-3.11.1
  • qpdfSUSE:Linux Enterprise Server 12 SP5all versions · fixed in 7.1.1-3.11.1
  • qpdfMageia:6all versions · fixed in 7.1.1-1.1.mga6
  • qpdfMageia:5all versions · fixed in 7.1.1-1.1.mga5
  • qpdfDebian:14all versions · fixed in 8.0.2-3

2 more package ranges on OSV.dev

Vendor advisories

  • CVE-2018-9918 Red Hat Product Security4 known affected

    qpdf: stack exhaustion in QPDFObjectHandle and QPDF_Dictionary classes in libqpdf.a

    qpdf as a component of Red Hat Enterprise Linux 7 · qpdf-devel as a component of Red Hat Enterprise Linux 7 · qpdf-doc as a component of Red Hat Enterprise Linux 7 · +1 more

Full record on NVD

Fix

  1. No fix planned, says the vendor Red Hat Product Security CVE-2018-9918 · 4 productsWill not fix

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
2018-04-10
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-mcgj-mgj8-8cr3

Frequently asked questions

What is CVE-2018-9918?

libqpdf.a in QPDF through 8.0.2 mishandles certain "expected dictionary key but found non-name object" cases, allowing remote attackers to cause a denial of service (stack exhaustion), related to the QPDFObjectHandle and QPDF_Dictionary classes, because nesting in direct objects is not restricted.

Is CVE-2018-9918 actively exploited?

Active exploitation of CVE-2018-9918 has not been confirmed. Its EPSS score was 1.7% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-9918?

CVE-2018-9918 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Running qpdf? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, November 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database

Sources for this record