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Fencer Intel
low 2.6

CVE-2026-100881 json

zhistaredu StarTraining application.yml cross site scripting

published last mo. modified last mo. also EUVD-2026-88028

cvss
2.6
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 security vulnerability has been detected in zhistaredu StarTraining up to 3.8.1. This issue affects some unknown processing of the file application.yml. Such manipulation of the argument xss.enabled leads to cross site scripting. It is possible to launch the attack remotely. Attacks of this nature are highly complex. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be used. Not independently exploitable: a defense-in-depth absence that amplifies CVE-2026-100880. The vendor was contacted early about this disclosure but did not respond in any way.

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CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
last mo.

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/ArrestX/startraining-advisories/blob/main/advisories/ST-VULN-007-xss-filter-disabled.md referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 2.1 CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
CNA 3.1 2.6 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C
CNA 3.0 2.6 CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N/E:P/RL:X/RC:C
CNA 2.0 2.1 AV:N/AC:H/Au:S/C:N/I:P/A:N/E:POC/RL:ND/RC:C
CNA 4.0 1.2 CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:N/VI:L/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 2.6 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
CNA 2.0 2.1 AV:N/AC:H/Au:S/C:N/I:P/A:N

Affected products

  • zhistaredu StarTraining

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Intel 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.