iAI Lab PDF AI App chatpdf.pro getExternalCacheDir path traversal

published 2026-06-06 5 mo ago modified 2026-07-23 3 mo ago also EUVD-2026-34966

cvss: 4.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits: 0; none known

A security flaw has been discovered in iAI Lab PDF AI App 4.21.0 on Android. Impacted is the function getExternalCacheDir of the component chatpdf.pro. Performing a manipulation of the argument _display_name results in path traversal. The attack requires a local approach. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 5 mo ago (2026-06-08)

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/actuator/chatpdf.pro referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	4.8	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CNA	3.1	4.4	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
CNA	3.0	4.4	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
CNA	2.0	3.2	AV:L/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:UR
CNA	4.0	1.9	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CNA	3.1	4.4	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CNA	2.0	3.2	AV:L/AC:L/Au:S/C:N/I:P/A:P

Affected products

iAI Lab PDF AI App

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

github.com /actuator/chatpdf.pro
exploit
vuldb.com /vuln/368968
vdb-entry, technical-description
vuldb.com /vuln/368968/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-11411
third-party-advisory
vuldb.com /submit/818818
third-party-advisory

Sources

CVE List CVE-2026-11411
NVD CVE-2026-11411

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary