CVE-2015-7263: The SPDY/2 codec in Facebook Proxygen before 2015-11-09 allows remote attackers to conduct hijacking attacks a

Q: How do I fix CVE-2015-7263?

proxygen: upgrade to newer than 0.32.0. Exact commands for each OS are on this page.

Q: Is CVE-2015-7263 being exploited?

CVE-2015-7263 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-2015-7263 affect?

CVE-2015-7263 affects proxygen. Severity is high (CVSS 7.5). The SPDY/2 codec in Facebook Proxygen before 2015-11-09 allows remote attackers to conduct hijacking attacks and bypass ACL checks via a crafted host value.

Q: How urgent is CVE-2015-7263?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2015-7263 is a high-severity flaw (CVSS 7.5) affecting proxygen. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The SPDY/2 codec in Facebook Proxygen before 2015-11-09 allows remote attackers to conduct hijacking attacks and bypass ACL checks via a crafted host value.

Why this priority

High severity
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	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-284
Published	2017-04-10
Last modified	2026-06-17

Publisher (CNA): CERT/CC · Vendor: proxygen project

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

Am I affected?

Timeline

2017-04-10 03:59 UTCPublished CVE record published
2026-06-17 00:32 UTCUpdated Record last modified

proxygen project proxygen UPGRADE

Affected: <= 0.32.0

Fixed in: newer than 0.32.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 0.32.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade proxygen

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-2015-7263?

proxygen: upgrade to newer than 0.32.0. Exact commands for each OS are on this page.

Is CVE-2015-7263 being exploited?

CVE-2015-7263 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-2015-7263 affect?

CVE-2015-7263 affects proxygen. Severity is high (CVSS 7.5). The SPDY/2 codec in Facebook Proxygen before 2015-11-09 allows remote attackers to conduct hijacking attacks and bypass ACL checks via a crafted host value.

How urgent is CVE-2015-7263?

Priority 49/100. High severity; Remotely exploitable, no login, no user action

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References

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