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Fencer Intel
medium 6.1

CVE-2019-15501 json

Reflected cross site scripting (XSS) in L-Soft LISTSERV before 16.5-2018a exists via the /scripts/wa.exe OK parameter.

published 7y ago modified 4mo ago also EUVD-2019-6489

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.1%
EPSS 8.1% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB, plus a Nuclei check

Summary

Reflected cross site scripting (XSS) in L-Soft LISTSERV before 16.5-2018a exists via the /scripts/wa.exe OK parameter.

Patch / fix

  • lsoft listserv 16.5-2018a

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Timeline

  1. First public exploit (EDB-47302)
  2. Published

Exploit prediction

8.15% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-47302 LSoft ListServ < 16.5-2018a - Cross-Site Scripting webapps, 2019-08-26
  • Nuclei template L-Soft LISTSERV <16.5-2018a - Cross-Site Scripting nuclei detection template
  • packetstormsecurity.com http://packetstormsecurity.com/files/154202/LSoft-ListServ-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

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

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.