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Fencer Intel
medium 4.3

CVE-2015-2839 json

The Nitro API in Citrix NetScaler before 10.5 build 52.3nc uses an incorrect Content-Type when returning an error message, which allows rem…

published 2015-04-03 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-2927

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

The Nitro API in Citrix NetScaler before 10.5 build 52.3nc uses an incorrect Content-Type when returning an error message, which allows remote attackers to conduct cross-site scripting (XSS) attacks via the file_name JSON member in params/xen_hotfix/0 to nitro/v1/config/xen_hotfix.

Exploit prediction

1.99% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • securify.nl https://www.securify.nl/advisory/SFY20140805/citrix_nitro_sdk_xen_hotfix_page_is_vulnerable_to_cross_site_scripting.html referenced PoC, tagged "exploit" by a source, unverified
  • packetstormsecurity.com http://packetstormsecurity.com/files/130931/Citrix-NITRO-SDK-xen_hotfix-Cross-Site-Scripting.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
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.