PropertyGuru AgentNet Singapore App com.allproperty.android.agentnet BuildConfig.java hard-coded key

published 2026-04-03 7 mo ago modified 2026-07-24 3 mo ago also EUVD-2026-18607

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 3%
public exploits: 0; none known

A security flaw has been discovered in PropertyGuru AgentNet Singapore App up to 23.7.10 on Android. This affects an unknown function of the file com/allproperty/android/agentnet/BuildConfig.java of the component com.allproperty.android.agentnet. The manipulation of the argument SEGMENT_ANDROID_WRITE_KEY/SEGMENT_TOS_WRITE_KEY results in use of hard-coded cryptographic key . The attack must be initiated from a local position. 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: 7 mo ago (2026-04-03)

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 3% 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-com-allpropert-3262de3f97fb80b5aa5ae52475bf155e?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

PropertyGuru AgentNet Singapore 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-com-allpropert-3262de3f
exploit
vuldb.com /vuln/355045
vdb-entry, technical-description
vuldb.com /vuln/355045/cti
signature, permissions-required
vuldb.com /submit/781764
third-party-advisory

Sources

CVE List CVE-2026-5457
NVD CVE-2026-5457

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