CVE-2021-32054: Firely/Incendi Spark before 1.5.5-r4 lacks Content-Disposition headers in certain situations, which may cause

Q: How do I fix CVE-2021-32054?

spark: upgrade to newer than 1.5.4. Exact commands for each OS are on this page.

Q: Is CVE-2021-32054 being exploited?

CVE-2021-32054 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-2021-32054 affect?

CVE-2021-32054 affects spark. Severity is medium (CVSS 6.1). Firely/Incendi Spark before 1.5.5-r4 lacks Content-Disposition headers in certain situations, which may cause crafted files to be delivered to clients such that they are rendered directly in a victim's web browser.

Q: How urgent is CVE-2021-32054?

Priority 37/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2021-32054 is a medium-severity flaw (CVSS 6.1) affecting spark. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Firely/Incendi Spark before 1.5.5-r4 lacks Content-Disposition headers in certain situations, which may cause crafted files to be delivered to clients such that they are rendered directly in a victim's web browser.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-706
Published	2021-05-14
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: fire.ly

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

Am I affected?

Timeline

2021-05-14 21:15 UTCPublished CVE record published
2026-06-17 03:52 UTCUpdated Record last modified

fire.ly spark UPGRADE

Affected: <= 1.5.4

Fixed in: newer than 1.5.4

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 1.5.4 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade spark

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-2021-32054?

spark: upgrade to newer than 1.5.4. Exact commands for each OS are on this page.

Is CVE-2021-32054 being exploited?

CVE-2021-32054 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-2021-32054 affect?

CVE-2021-32054 affects spark. Severity is medium (CVSS 6.1). Firely/Incendi Spark before 1.5.5-r4 lacks Content-Disposition headers in certain situations, which may cause crafted files to be delivered to clients such that they are rendered directly in a victim's web browser.

How urgent is CVE-2021-32054?

Priority 37/100. No elevated risk signals yet.

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References

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