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Fencer Vulns
low 2.4

CVE-2026-13514 json

Chess Play and Learn App com.chess AndroidManifest.xml backup

published 2026-06-28 4 mo ago modified 2026-10-25 15 d ago also EUVD-2026-40011

cvss
2.4
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 7%
public exploits
0
none known

Summary

A weakness has been identified in Chess Play and Learn App up to 4.9.42 on Android. This issue affects some unknown processing of the file AndroidManifest.xml of the component com.chess. This manipulation causes exposure of backup file to an unauthorized control sphere. It is feasible to perform the attack on the physical device. The exploit has been made available to the public and could be used for attacks. Upgrading the affected component is advised. The vendor was informed early about this issue. They confirmed the existence and that they will address it. Furthermore, they explain that their bug bounty "explicitly excludes physical-access attacks". However, they appreciate the quality of the report and aim at making a goodwill payment to the researcher.

Patch / fix

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
4 mo ago

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/honestcorrupt/CHESS.COM-CVE-REQUEST referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 2.4 CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
CNA 3.1 2.4 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
CNA 3.0 2.4 CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
CNA 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:OF/RC:C
CNA 4.0 0.9 CVSS:4.0/AV:P/AC:L/AT:N/PR:N/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 2.4 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CNA 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Chess Play and Learn App

Classification

Weakness
  • CWE-530 Exposure of Backup File to an Unauthorized Control Sphere
  • CWE-285 Improper Authorization

References

Sources

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.