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Fencer Vulns
medium 5.3

CVE-2023-38357 json

Session tokens in RWS WorldServer 11.7.3 and earlier have a low entropy and can be enumerated, leading to unauthorized access to user sessi…

published 2023-08-01 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-42174

cvss
5.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.3%
EPSS 5.3% chance of exploitation in 30 days, percentile 92%
public exploits
1
Exploit-DB

Summary

Session tokens in RWS WorldServer 11.7.3 and earlier have a low entropy and can be enumerated, leading to unauthorized access to user sessions.

Patch / fix

  • rws worldserver 11.8.0

Timeline

  1. First public exploit (EDB-51619)
  2. Published

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

5.35% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-51619 RWS WorldServer 11.7.3 - Session Token Enumeration webapps, 2023-07-20
  • seclists.org http://seclists.org/fulldisclosure/2023/Jul/30 referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/173609/RWS-WorldServer-11.7.3-Session-Token-Enumeration.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Classification

Weakness

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.