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Public proof of conceptFix available

CVE-2018-17057

A public proof of concept exists; no exploitation attested.

  • Published2018-09-14
  • Fixed in3.16.0
  • WeaknessCWE-502

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

An issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.

Timeline

dates in UTC
  1. 2019-04-02Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-17057?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-17057?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV
Limesurvey
BranchAffectedFixed in
3.16< 3.16.03.16.0
Tecnick tcpdf
BranchAffectedFixed in
6.2< 6.2.226.2.22

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

  • tcpdfUbuntu:22.04:LTSall versions · no fixed version listed
  • tcpdfUbuntu:20.04:LTSall versions · no fixed version listed
  • tcpdfUbuntu:18.04:LTSall versions · no fixed version listed
  • tcpdfUbuntu:16.04:LTSall versions · no fixed version listed
  • tcpdfUbuntu:14.04:LTSall versions · no fixed version listed
  • tcpdfDebian:14all versions · fixed in 6.2.26+dfsg-1
  • tcpdfDebian:13all versions · fixed in 6.2.26+dfsg-1
  • tcpdfDebian:12all versions · fixed in 6.2.26+dfsg-1

Vendor advisories

  • CVE-2018-17057 Red Hat Product Security

    php-tcpdf: phar deserialization in TCPDF might lead to RCE

Full record on NVD

Fix

  1. Update Limesurvey to 3.16.0

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
none so far
ProjectDiscovery
Exploit-DB
EDB-46634
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2018-09-14
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-5hw4-m7f3-hhx8

Frequently asked questions

What is CVE-2018-17057?

An issue was discovered in TCPDF before 6.2.22. Attackers can trigger deserialization of arbitrary data via the phar:// wrapper.

Is CVE-2018-17057 actively exploited?

Active exploitation of CVE-2018-17057 has not been confirmed. Its EPSS score was 26.2% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-17057?

CVE-2018-17057 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record