CVE-2015-5236: It was discovered that the IcedTea-Web used codebase attribute of the <applet> tag on the HTML page that hosts

This week

HIGH 7.5REMOTEMITIGATE

CVE-2015-5236 is a high-severity flaw (CVSS 7.5) affecting icedtea-web. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

It was discovered that the IcedTea-Web used codebase attribute of the <applet> tag on the HTML page that hosts Java applet in the Same Origin Policy (SOP) checks. As the specified codebase does not have to match the applet's actual origin, this allowed malicious site to bypass SOP via spoofed codebase value.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.8% (top 43%)
CISA exploited list	No
Weakness	CWE-345
Published	2022-07-07
Last modified	2026-06-17

Publisher (CNA): Red Hat, Inc. · Vendor: icedtea-web project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-07-07 16:15 UTCPublished CVE record published
2026-06-17 00:28 UTCUpdated Record last modified

icedtea-web project icedtea-web 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 icedtea-web || rpm -q icedtea-web || icedtea-web --version

No fixed or unaffected release known

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

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-2015-5236?

icedtea-web: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2015-5236 being exploited?

CVE-2015-5236 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-2015-5236 affect?

CVE-2015-5236 affects icedtea-web. Severity is high (CVSS 7.5). It was discovered that the IcedTea-Web used codebase attribute of the <applet> tag on the HTML page that hosts Java applet in the Same Origin Policy (SOP) checks. As the specified codebase does not have to match the applet's actual origin,

How urgent is CVE-2015-5236?

Priority 51/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Java vulnerabilities

References

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