Dialogue App ca.diagram.dialogue config.json hard-coded key

published 2026-04-03 7 mo ago modified 2026-07-24 3 mo ago also EUVD-2026-18603

cvss: 3.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 1%
public exploits: 0; none known

A vulnerability was determined in Dialogue App up to 4.3.2 on Android. The affected element is an unknown function of the file file res/raw/config.json of the component ca.diagram.dialogue. Executing a manipulation of the argument SEGMENT_WRITE_KEY can lead to use of hard-coded cryptographic key . The attack is restricted to local execution. The exploit has been publicly disclosed and may be utilized. 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: 7 mo ago (2026-04-03)

Exploit prediction

0.11% chance of exploitation in the next 30 days, higher than 1% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

notion.so https://www.notion.so/Segment-Write-Key-Exposure-Leading-to-Data-Injection-and-User-Profile-Manipulation-In-ca-diagram-dia-3262de3f97fb802fb5f0d2c9d179dcf6?source=copy_link 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:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
CNA	3.1	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
CNA	3.0	3.3	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R
CNA	2.0	1.7	AV:L/AC:L/Au:S/C:P/I:N/A:N/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:L/VI:N/VA:N/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	3.3	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CNA	2.0	1.7	AV:L/AC:L/Au:S/C:P/I:N/A:N

Affected products

n/a Dialogue App

Classification

Weakness

CWE-321 Use of Hard-coded Cryptographic Key
CWE-320 Key Management Errors

References

notion.so /Segment-Write-Key-Exposure-Leading-to-Data-Injection-and-User-Profile-Manipulation-In-ca-diagram-dia-3262de3f
exploit
vuldb.com /vuln/355043
vdb-entry, technical-description
vuldb.com /vuln/355043/cti
signature, permissions-required
vuldb.com /submit/781761
third-party-advisory

Sources

CVE List CVE-2026-5455
NVD CVE-2026-5455

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