CVE-2011-5253: Dl Download Ticket Service 0.3 through 0.9 allows remote attackers to login as an arbitrary user by supplying

Routine

MEDIUM 4.3DOWNGRADE

CVE-2011-5253 is a medium-severity flaw (CVSS 4.3) affecting dl. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Dl Download Ticket Service 0.3 through 0.9 allows remote attackers to login as an arbitrary user by supplying an authorization header.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.3 (Medium)
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-287
Published	2013-01-12
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: thegr

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

Am I affected?

Timeline

2013-01-12 04:33 UTCPublished CVE record published
2026-06-16 23:36 UTCUpdated Record last modified

thegr dl DOWNGRADE

Affected: 0.3 · 0.4 · 0.5 · 0.6 · 0.7 · 0.8 · 0.9

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.3

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.3 (Debian / Ubuntu)

apt-cache madison dl sudo apt install dl=<VERSION_BEFORE_0.3> sudo apt-mark hold dl

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list dl sudo dnf downgrade dl-<VERSION_BEFORE_0.3> sudo dnf versionlock add dl

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2011-5253?

dl: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2011-5253 being exploited?

CVE-2011-5253 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-2011-5253 affect?

CVE-2011-5253 affects dl. Severity is medium (CVSS 4.3). Dl Download Ticket Service 0.3 through 0.9 allows remote attackers to login as an arbitrary user by supplying an authorization header.

How urgent is CVE-2011-5253?

Priority 32/100. No elevated risk signals yet.

References

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