PubSub in Apple Safari before 4.0.5 does not properly implement use of the Accept Cookies preference to block cookies, which makes it easier for remote web servers to track users by setting a cookie in a (1) RSS or (2) Atom feed.
Conclusion & alert: CVE-2010-0044 is rated Low Risk (38.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.46%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-03-30 | 0.69% | 0.46% | -0.22% |
| 2 | 2025-03-29 | 0.46% | 0.69% | +0.22% |
| 3 | 2025-03-17 | — | 0.46% | — |
Full EPSS history (5 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
low | CVE-2010-0044 low priority: Ubuntu including 2 source packages (libipc-pubsub-perl, libpoe-component-pubsub-perl), 76 status rows across 38 suites (artful, bionic, cosmic, dapper, disco, eoan, focal, groovy, hardy, hirsute, impish, intrepid, jammy, jaunty, karmic, kinetic, lucid, lunar, mantic, maverick, natty, noble, oneiric, oracular, plucky, precise, quantal, questing, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, z... | https://ubuntu.com/security/CVE-2010-0044 |
: Per: http://lists.apple.com/archives/security-announce/2010/Mar/msg00000.html 'PubSub CVE-ID: CVE-2010-0044 Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.8, Mac OS X Server v10.5.8, Mac OS X v10.6.1 or later, Mac OS X Server v10.6.1 or later, Windows 7, Vista, XP Impact: Visiting or updating a feed may result in a cookie being set, even if Safari is configured to block cookies Description: An implementation issue exists in the handling of cookies set by RSS and Atom feeds. Visiting or updating a feed may result in a cookie being set, even if Safari is configured to block cookies via the "Accept Cookies" preference. This update addresses the issue by respecting the preference while updating or viewing feeds.'
: Per: http://lists.apple.com/archives/security-announce/2010/Mar/msg00000.html 'Safari 4.0.5 is available via the Apple Software Update application, or Apple's Safari download site at: http://www.apple.com/safari/download/'
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| apple | safari | <= 4.0.4 | cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* |
| apple | safari | 4.0 | cpe:2.3:a:apple:safari:4.0:*:*:*:*:*:*:* |
| apple | safari | 4.0.0b | cpe:2.3:a:apple:safari:4.0.0b:*:*:*:*:*:*:* |
| apple | safari | 4.0.1 | cpe:2.3:a:apple:safari:4.0.1:*:*:*:*:*:*:* |
| apple | safari | 4.0.2 | cpe:2.3:a:apple:safari:4.0.2:*:*:*:*:*:*:* |
| apple | safari | 4.0.3 | cpe:2.3:a:apple:safari:4.0.3:*:*:*:*:*:*:* |