CVE-2010-1420: Cross-site scripting (XSS) vulnerability in CFNetwork in Apple Safari before 5.0.6 allows remote attackers to

Q: How do I fix CVE-2010-1420?

cfnetwork: mitigate or apply the listed mitigation; safari: upgrade to newer than 5.0.5. Exact commands for each OS are on this page.

Q: Is CVE-2010-1420 being exploited?

CVE-2010-1420 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2010-1420 affect?

CVE-2010-1420 affects cfnetwork, safari. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in CFNetwork in Apple Safari before 5.0.6 allows remote attackers to inject arbitrary web script or HTML via a crafted text/plain file.

Q: How urgent is CVE-2010-1420?

Priority 34/100. No elevated risk signals yet.

Routine

MEDIUM 4.3MITIGATEUPGRADE

CVE-2010-1420 is a medium-severity flaw (CVSS 4.3) affecting cfnetwork, safari. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in CFNetwork in Apple Safari before 5.0.6 allows remote attackers to inject arbitrary web script or HTML via a crafted text/plain file.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.6% (top 24%)
CISA exploited list	No
Weakness	CWE-79
Published	2011-07-21
Last modified	2026-06-16

Publisher (CNA): Apple Inc. · Vendor: apple

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2011-07-21 23:55 UTCPublished CVE record published
2026-06-16 23:18 UTCUpdated Record last modified

apple cfnetwork MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cfnetwork || rpm -q cfnetwork || cfnetwork --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

apple safari UPGRADE

Affected: <= 5.0.5 · 1.0 · 1.0 beta · 1.0 beta2 · 1.0.0 · 1.0.0b1 · 1.0.0b2 · 1.0.1

Fixed in: newer than 5.0.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy safari || rpm -q safari || safari --version

2. UPGRADE to newer than 5.0.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade safari

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade safari

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2010-1420?

cfnetwork: mitigate or apply the listed mitigation; safari: upgrade to newer than 5.0.5. Exact commands for each OS are on this page.

Is CVE-2010-1420 being exploited?

CVE-2010-1420 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2010-1420 affect?

CVE-2010-1420 affects cfnetwork, safari. Severity is medium (CVSS 4.3). Cross-site scripting (XSS) vulnerability in CFNetwork in Apple Safari before 5.0.6 allows remote attackers to inject arbitrary web script or HTML via a crafted text/plain file.

How urgent is CVE-2010-1420?

Priority 34/100. No elevated risk signals yet.

Software pages

Safari vulnerabilities · Apple Safari and WebKit vulnerabilities

Related CVEs

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CVE-2007-0464 MEDIUM 5.0 DOWNGRADE The _CFNetConnectionWillEnqueueRequests function in CFNetwork 129.19 on Apple Mac OS X 10.4 through 10.4.10 al

References

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