01 Record
CVE-2026-45045
Fiber: X-Real-IP Spoofing via Header.Add() in BalancerForward
MediumPUBLISHEDCNA: GitHub_M
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
02 Description
Fiber: X-Real-IP Spoofing via Header.Add() in BalancerForward
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.46% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 39.8% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-10-25.
- 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.
04 Metadata
- Published
- 2026-07-08 19:26Z3 MO AGO
- Last updated
- 2026-07-09 13:20Z3 MO AGO
- Reserved
- 2026-05-08
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 5.3)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weaknesses
- CWE-290Authentication Bypass by SpoofingBase
- Data version
- 5.2
- Document digest
- a815f1aff2676c2dcf023525d34a6ad313d78f4d63cfe92bfbe97a559d189ae7
05 Affected products
VendorProductVersionsPlatforms
06 References
- github.comhttps://github.com/gofiber/fiber/security/advisories/GHSA-gcfq-8gqf-4876
- github.comhttps://github.com/gofiber/fiber/pull/4260
- github.comhttps://github.com/gofiber/fiber/pull/4495
- github.comhttps://github.com/gofiber/fiber/commit/1403cc8292da3220e9316960b4030cc722a0f396
- github.comhttps://github.com/gofiber/fiber/commit/33c9501288ab47a429c8b5e701493f0c3c0af37d
- github.comhttps://github.com/gofiber/fiber/releases/tag/v2.52.14
- github.comhttps://github.com/gofiber/fiber/releases/tag/v3.3.0
07 Fixed in
Ubuntu 26.10
- golang-github-gofiber-fiber No fix yet
- golang-github-gofiber-fiber-v2 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.