CVE-1999-1481 json
Squid 2.2.STABLE5 and below, when using external authentication, allows attackers to bypass access controls via a newline in the user/passw…
published 1999-12-31 26 y ago modified 2026-06-16 4 mo ago also EUVD-1999-1462
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 3.6%
- EPSS 3.6% chance of exploitation in 30 days, percentile 89%
- public exploits
- 1
- Exploit-DB
Summary
Squid 2.2.STABLE5 and below, when using external authentication, allows attackers to bypass access controls via a newline in the user/password pair.
Patch / fix
- squid-cache.org/Versions/v2/2.2/bugs/ advisory
- securityfocus.com/bid/741 advisory
Timeline
- First public exploit (EDB-19567)
- Published
Exploit prediction
3.57% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-19567 National Science Foundation Squid Web Proxy 1.0/1.1/2.1 - Authentication Failure remote, 1999-10-25
- securityfocus.com http://www.securityfocus.com/bid/741 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
References
-
squid-cache.org
/Versions/v2/2.2/bugs/
patch, vendor-advisory
-
securityfocus.com
/bid/741
vdb-entry, exploit, patch, vendor-advisory
-
securityfocus.com
/archive/1/33295
mailing-list
-
exchange.xforce.ibmcloud.com
/vulnerabilities/3433
vdb-entry
Sources
- CVE List CVE-1999-1481
- NVD CVE-1999-1481
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