CVE-2021-32848: Octobox is software for managing GitHub notifications

Q: How do I fix CVE-2021-32848?

octobox: upgrade to 2021-11-02. Exact commands for each OS are on this page.

Q: Is CVE-2021-32848 being exploited?

CVE-2021-32848 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-2021-32848 affect?

CVE-2021-32848 affects octobox. Severity is high (CVSS 7.5). Octobox is software for managing GitHub notifications. Prior to pull request (PR) 2807, a user of the system can provide a specifically crafted search query string that will trigger a ReDoS vulnerability. This issue is fixed in PR 2807.

Q: How urgent is CVE-2021-32848?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2021-32848 is a high-severity flaw (CVSS 7.5) affecting octobox. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Octobox is software for managing GitHub notifications. Prior to pull request (PR) 2807, a user of the system can provide a specifically crafted search query string that will trigger a ReDoS vulnerability. This issue is fixed in PR 2807.

Why this priority

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

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-770, CWE-1333
Published	2023-02-20
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: octobox project

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

Am I affected?

Timeline

2023-02-20 17:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

octobox project octobox UPGRADE

Affected: < 2021-11-02

Fixed in: 2021-11-02

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 2021-11-02 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade octobox

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-2021-32848?

octobox: upgrade to 2021-11-02. Exact commands for each OS are on this page.

Is CVE-2021-32848 being exploited?

CVE-2021-32848 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-2021-32848 affect?

CVE-2021-32848 affects octobox. Severity is high (CVSS 7.5). Octobox is software for managing GitHub notifications. Prior to pull request (PR) 2807, a user of the system can provide a specifically crafted search query string that will trigger a ReDoS vulnerability. This issue is fixed in PR 2807.

How urgent is CVE-2021-32848?

Priority 52/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

GitHub vulnerabilities

References

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