CVE-2026-84308

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.32% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 25.5% of scored records. A rank, not a probability.

NVD base score

6.3 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

NVD analysis status

Deferred. NVD last modified this record on 2026-09-09.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2026-09-01 19:28Z1 MO AGO

Last updated

2026-09-03 17:41Z1 MO AGO

Reserved

2026-09-01

Assigning CNA

GitHub_M

Record state

PUBLISHED

Severity

Medium (CVSS 6.3)

CNA CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Weaknesses

• CWE-208Observable Timing DiscrepancyBase
• CWE-385Covert Timing ChannelBase

Data version

5.2

Document digest

ca8888f3eda2345b5d541ca3724c36a4f5a52dce200ea8b3aeacf36c6f411ba3

• github.comhttps://github.com/phpseclib/phpseclib/security/advisories/GHSA-q97c-8qh3-fpc6x_refsource_CONFIRM
• github.comhttps://github.com/phpseclib/phpseclib/commit/fb56bc5bb9009b54a6c26b31aeec8ed944f17373x_refsource_MISC
• github.comhttps://github.com/phpseclib/phpseclib/releases/tag/3.0.57x_refsource_MISC
• github.comhttps://github.com/phpseclib/phpseclib/releases/tag/4.0.1x_refsource_MISC