CVE-2021-45818: SAFARI Montage 8.7.32 is affected by a CRLF injection vulnerability which can lead to HTTP response splitting.

Routine

MEDIUM 6.1DOWNGRADE

CVE-2021-45818 is a medium-severity flaw (CVSS 6.1) affecting safari montage. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SAFARI Montage 8.7.32 is affected by a CRLF injection vulnerability which can lead to HTTP response splitting.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.7% (top 48%)
CISA exploited list	No
Weakness	CWE-74
Published	2021-12-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: safarimontage

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

Am I affected?

Timeline

2021-12-30 13:15 UTCPublished CVE record published
2026-06-17 04:14 UTCUpdated Record last modified

safarimontage safari montage DOWNGRADE

Affected: 8.7.32

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.7.32

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 8.7.32 (Debian / Ubuntu)

apt-cache madison safari-montage sudo apt install safari-montage=<VERSION_BEFORE_8.7.32> sudo apt-mark hold safari-montage

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

dnf --showduplicates list safari-montage sudo dnf downgrade safari-montage-<VERSION_BEFORE_8.7.32> sudo dnf versionlock add safari-montage

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-2021-45818?

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

Is CVE-2021-45818 being exploited?

CVE-2021-45818 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-2021-45818 affect?

CVE-2021-45818 affects safari montage. Severity is medium (CVSS 6.1). SAFARI Montage 8.7.32 is affected by a CRLF injection vulnerability which can lead to HTTP response splitting.

How urgent is CVE-2021-45818?

Priority 39/100. Public exploit reference

Software pages

Safari vulnerabilities · Apple Safari and WebKit vulnerabilities

Related CVEs

CVE-2021-45425 MEDIUM 6.1 DOWNGRADE Reflected Cross Site Scripting (XSS) in SAFARI Montage versions 8.3 and 8.5 allows remote attackers to execute

References

← Back to latest CVEs