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CVE-2026-42554

Fiber: XSS in AutoFormat Content Negotiation

5.3 MediumFix available

Fiber is a web framework for Go. Prior to 2.52.12 and 3.1.0, Cross-Site Scripting vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat() feature. The developer opts into content negotiation by calling AutoFormat(), but does not opt into raw HTML emission for a particular request; Fiber chooses that branch from attacker-controlled Accept. The html branch is the sole outlier in a method whose name (AutoFormat) and symmetrical structure actively telegraph "safe, format-agnostic reply." This vulnerability is fixed in 2.52.12 and 3.1.0.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Passive

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
None

Exploit likelihood

0.21%Unchanged since May 12, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.3

Fiber: XSS in AutoFormat Content Negotiation

Fiber is a web framework for Go. Prior to 2.52.12 and 3.1.0, Cross-Site Scripting vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat() feature. The developer opts into content negotiation by calling AutoFormat(), but does not opt into raw HTML emission for a particular request; Fiber chooses that branch from attacker-controlled Accept. The html branch is the sole outlier in a method whose name (AutoFormat) and symmetrical structure actively telegraph "safe, format-agnostic reply." This vulnerability is fixed in 2.52.12 and 3.1.0.

Record
CVE-2026-42554
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness
CWE-79
Updated
2026-11-02
EUVDEUVD-2026-29328 5.3

Fiber is a web framework for Go. Prior to 2.52.12 and 3.1.0, Cross-Site Scripting vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat() feature. The developer opts into content negotiation by calling AutoFormat(), but does not opt into raw HTML emission for a particular request; Fiber chooses that branch from attacker-controlled Accept. The html branch is the sole outlier in a method whose name (AutoFormat) and symmetrical structure actively telegraph "safe, format-agnostic reply." This vulnerability is fixed in 2.52.12 and 3.1.0.

Record
EUVD-2026-29328
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-qjv7-627w-8qjv 5.3

Fiber vulnerable to XSS in AutoFormat Content Negotiation

Summary

Description

A Cross-Site Scripting (CWE-79) vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat() feature. This affects github.com/gofiber/fiber/v3 (DefaultRes.AutoFormat) through version 3.1.0 and github.com/gofiber/fiber/v2 (Ctx.Format) through version 2.52.12.

The developer opts into content negotiation by calling AutoFormat(), but does not opt into raw HTML emission for a particular request; Fiber chooses that branch from attacker-controlled Accept. Five of the six branches of the same method already escape. JSON, XML, MsgPack, and CBOR all route through encoders that neutralize markup; the txt branch emits text/plain and cannot execute. The html branch is the sole outlier in a method whose name (AutoFormat) and symmetrical structure actively telegraph "safe, format-agnostic reply."

Details

The issue resides in res.go within (*DefaultRes).AutoFormat(). The method negotiates against the request Accept header, selects one of html | json | txt | xml | msgpack | cbor, and serializes the caller-supplied body accordingly.

The "html" branch concatenates the stringified body directly into HTML markup with no output encoding:

  • accept comes from r.c.Accepts(...), i.e. is fully attacker-controlled. An attacker can force the "html" branch on any AutoFormat() call regardless of which format the developer tested against.
  • b is produced from body via direct assignment (string / []byte) or fmt.Sprintf("%v", body). No html.EscapeString is applied.
  • The resulting string is sent as text/html; charset=utf-8, so browsers render it as active HTML.
// res.go
func (r *DefaultRes) AutoFormat(body any) error {

    accept := r.c.DefaultReq.Accepts("html", "json", "txt", "xml", "msgpack", "cbor")

    r.Type(accept)
    var b string
    switch val := body.(type) {
    case string:
        b = val
    case []byte:
        b = r.c.app.toString(val)
    default:
        b = fmt.Sprintf("%v", val)
    }

    switch accept {
    case "txt":
        return r.SendString(b)
    case "json":
        return r.JSON(body)
    case "xml":
        return r.XML(body)
    case "html":
        return r.SendString("<p>" + b + "</p>")
    case "msgpack":
        return r.MsgPack(body)
    case "cbor":
        return r.CBOR(body)
    }
    return r.SendString(b)
}

Impact

This impacts all current v3 releases ≤ 3.1.0 containing DefaultRes.AutoFormat, and all current v2 releases ≤ 2.52.12 where the identical "<p>" + b + "</p>" construction exists in (*Ctx).Format(). Exploitation requires that an application call c.AutoFormat(v) where v (or a field stringified by %v) contains request-influenced data.

A handler that uses AutoFormat() to serve multiple representations of the same data can be turned into an HTML XSS sink when the client sends Accept: text/html, even if the developer only tested the JSON path.

This may result in:

  • Reflected XSS in the application's origin via any request-derived value reaching AutoFormat.
  • Stored XSS where the reflected value originates from persisted input later passed to AutoFormat.

Proposed Patch

The injection surface is r.Type("html") followed by r.SendString(b) with unescaped caller data, where it constructs markup on the caller's behalf around a value whose HTML-ness the caller did not declare. A few options:

  • AutoFormat() should treat body as data, not markup, in the "html" branch and escape it before concatenating it into the framework-generated <p> wrapper. Callers that need raw negotiated HTML should use Format() with an explicit HTML handler.
  • Introduce a sibling method that escapes, leave AutoFormat alone for backward compatibility.

HTML-escape the value in the "html" branch before concatenating it into the <p> wrapper.

import "html"…
Record
GHSA-qjv7-627w-8qjv
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness
CWE-79
Updated
2026-11-02
NVD 5.3

Fiber is a web framework for Go. Prior to 2.52.12 and 3.1.0, Cross-Site Scripting vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat() feature. The developer opts into content negotiation by calling AutoFormat(), but does not opt into raw HTML emission for a particular request; Fiber chooses that branch from attacker-controlled Accept. The html branch is the sole outlier in a method whose name (AutoFormat) and symmetrical structure actively telegraph "safe, format-agnostic reply." This vulnerability is fixed in 2.52.12 and 3.1.0.

Record
CVE-2026-42554
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSV 5.3

Fiber: XSS in AutoFormat Content Negotiation

Fiber is a web framework for Go. Prior to 2.52.12 and 3.1.0, Cross-Site Scripting vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat() feature. The developer opts into content negotiation by calling AutoFormat(), but does not opt into raw HTML emission for a particular request; Fiber chooses that branch from attacker-controlled Accept. The html branch is the sole outlier in a method whose name (AutoFormat) and symmetrical structure actively telegraph "safe, format-agnostic reply." This vulnerability is fixed in 2.52.12 and 3.1.0.

Record
CVE-2026-42554
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness
CWE-79
Updated
2026-11-02
OSVGHSA-qjv7-627w-8qjv 5.3

Fiber vulnerable to XSS in AutoFormat Content Negotiation

Summary

Description

A Cross-Site Scripting (CWE-79) vulnerability in Go Fiber allows a remote attacker to inject arbitrary HTML/JavaScript by supplying Accept: text/html on any request whose handler passes attacker-influenced data to the AutoFormat() feature. This affects github.com/gofiber/fiber/v3 (DefaultRes.AutoFormat) through version 3.1.0 and github.com/gofiber/fiber/v2 (Ctx.Format) through version 2.52.12.

The developer opts into content negotiation by calling AutoFormat(), but does not opt into raw HTML emission for a particular request; Fiber chooses that branch from attacker-controlled Accept. Five of the six branches of the same method already escape. JSON, XML, MsgPack, and CBOR all route through encoders that neutralize markup; the txt branch emits text/plain and cannot execute. The html branch is the sole outlier in a method whose name (AutoFormat) and symmetrical structure actively telegraph "safe, format-agnostic reply."

Details

The issue resides in res.go within (*DefaultRes).AutoFormat(). The method negotiates against the request Accept header, selects one of html | json | txt | xml | msgpack | cbor, and serializes the caller-supplied body accordingly.

The "html" branch concatenates the stringified body directly into HTML markup with no output encoding:

  • accept comes from r.c.Accepts(...), i.e. is fully attacker-controlled. An attacker can force the "html" branch on any AutoFormat() call regardless of which format the developer tested against.
  • b is produced from body via direct assignment (string / []byte) or fmt.Sprintf("%v", body). No html.EscapeString is applied.
  • The resulting string is sent as text/html; charset=utf-8, so browsers render it as active HTML.
// res.go
func (r *DefaultRes) AutoFormat(body any) error {

    accept := r.c.DefaultReq.Accepts("html", "json", "txt", "xml", "msgpack", "cbor")

    r.Type(accept)
    var b string
    switch val := body.(type) {
    case string:
        b = val
    case []byte:
        b = r.c.app.toString(val)
    default:
        b = fmt.Sprintf("%v", val)
    }

    switch accept {
    case "txt":
        return r.SendString(b)
    case "json":
        return r.JSON(body)
    case "xml":
        return r.XML(body)
    case "html":
        return r.SendString("<p>" + b + "</p>")
    case "msgpack":
        return r.MsgPack(body)
    case "cbor":
        return r.CBOR(body)
    }
    return r.SendString(b)
}

Impact

This impacts all current v3 releases ≤ 3.1.0 containing DefaultRes.AutoFormat, and all current v2 releases ≤ 2.52.12 where the identical "<p>" + b + "</p>" construction exists in (*Ctx).Format(). Exploitation requires that an application call c.AutoFormat(v) where v (or a field stringified by %v) contains request-influenced data.

A handler that uses AutoFormat() to serve multiple representations of the same data can be turned into an HTML XSS sink when the client sends Accept: text/html, even if the developer only tested the JSON path.

This may result in:

  • Reflected XSS in the application's origin via any request-derived value reaching AutoFormat.
  • Stored XSS where the reflected value originates from persisted input later passed to AutoFormat.

Proposed Patch

The injection surface is r.Type("html") followed by r.SendString(b) with unescaped caller data, where it constructs markup on the caller's behalf around a value whose HTML-ness the caller did not declare. A few options:

  • AutoFormat() should treat body as data, not markup, in the "html" branch and escape it before concatenating it into the framework-generated <p> wrapper. Callers that need raw negotiated HTML should use Format() with an explicit HTML handler.
  • Introduce a sibling method that escapes, leave AutoFormat alone for backward compatibility.

HTML-escape the value in the "html" branch before concatenating it into the <p> wrapper.

import "html"…
Record
GHSA-qjv7-627w-8qjv
CVSS 4.0
5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Weakness
CWE-79
Updated
2026-11-02
Show 4 moreShow less
OSVGO-2026-5585 No score

Fiber vulnerable to XSS in AutoFormat Content Negotiation in github.com/gofiber/fiber

Fiber vulnerable to XSS in AutoFormat Content Negotiation in github.com/gofiber/fiber

Record
GO-2026-5585
Updated
2026-11-02
OSVopenSUSE-SU-2026:21551-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260727T201416 2026-07-27T20:14:16Z (jsc#PED-11136):

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-5046 CVE-2026-46385 GHSA-w8j3-pq8g-8m7w
  • GO-2026-5047 CVE-2026-46384 GHSA-mc57-h6j3-3hmv
  • GO-2026-5048 GHSA-mx64-mj3q-7prj
  • GO-2026-5051
  • GO-2026-5069 CVE-2026-30246 GHSA-35hp-hqmv-8qg8
  • GO-2026-5074 CVE-2026-45022 GHSA-389r-gv7p-r3rp
  • GO-2026-5105 CVE-2026-41506 GHSA-3xc5-wrhm-f963
  • GO-2026-5116 CVE-2026-44517 GHSA-49p4-px3h-rq49
  • GO-2026-5158 CVE-2026-41178 GHSA-5wrp-cwcj-q835
  • GO-2026-5198 CVE-2026-41642 GHSA-7235-89m6-f4px
  • GO-2026-5208 CVE-2026-40890 GHSA-77fj-vx54-gvh7
  • GO-2026-5266 CVE-2026-41643 GHSA-8rxh-r2p6-7f2q
  • GO-2026-5309 GHSA-c3wq-j5vh-68rc
  • GO-2026-5327 CVE-2026-2303 GHSA-cp6g-7hqx-qxhp
  • GO-2026-5336 CVE-2026-45571 GHSA-crhj-59gh-8x96
  • GO-2026-5346 CVE-2026-52845 GHSA-f59h-q822-g45g
  • GO-2026-5408 GHSA-gx7w-56w6-g48x
  • GO-2026-5426 CVE-2026-39883 GHSA-hfvc-g4fc-pqhx
  • GO-2026-5435 CVE-2026-35206 GHSA-hr2v-4r36-88hr
  • GO-2026-5452 CVE-2026-34783 GHSA-j6v5-g24h-vg4j
  • GO-2026-5463 CVE-2026-8276 GHSA-jcqv-2g3v-gm88
  • GO-2026-5471 CVE-2026-6993 GHSA-jj45-xvq5-rhh9
  • GO-2026-5490 CVE-2026-44740 GHSA-m3xc-h892-ggx6
  • GO-2026-5492 CVE-2026-45135 GHSA-m675-2p33-xv9g
  • GO-2026-5506 CVE-2026-29181 GHSA-mh2q-q3fh-2475
  • GO-2026-5525 CVE-2026-42285 GHSA-p3w2-64xm-833j
  • GO-2026-5543 CVE-2026-32952 GHSA-pjcq-xvwq-hhpj
  • GO-2026-5548 CVE-2026-44166 GHSA-pq7p-mc74-g65w
  • GO-2026-5566 CVE-2026-35205 GHSA-q5jf-9vfq-h4h7
  • GO-2026-5569 GHSA-q76j-gcg9-vxc6
  • GO-2026-5585 CVE-2026-42554 GHSA-qjv7-627w-8qjv
  • GO-2026-5593 CVE-2026-40611 GHSA-qqx8-2xmm-jrv8
  • GO-2026-5595 CVE-2026-52844 GHSA-qrp7-cvwr-j2c6
  • GO-2026-5597 CVE-2026-44973 GHSA-qw64-3x98-g7q2
  • GO-2026-5606 GHSA-r46f-3rpw-hxrv
  • GO-2026-5617 CVE-2026-42306 GHSA-rg2x-37c3-w2rh
  • GO-2026-5660 CVE-2026-52846 GHSA-vcc4-2c75-vc9v
  • GO-2026-5666 CVE-2026-35204 GHSA-vmx8-mqv2-9gmg
  • GO-2026-5684 CVE-2026-42328 GHSA-w239-58x2-q8p5
  • GO-2026-5693 GHSA-w5pp-99ch-qj29
  • GO-2026-5730 GHSA-wwhq-w58m-w29c
  • GO-2026-5736 CVE-2026-44283 GHSA-x35m-3gp4-4fh5
  • GO-2026-5740 CVE-2026-44301 GHSA-x597-9fr4-5857
  • GO-2026-5748 CVE-2026-7482 GHSA-x8qc-fggm-mpqg
  • GO-2026-5750 CVE-2026-7020 GHSA-x99g-8v8j-25j2
  • GO-2026-5774 GHSA-3fxj-6jh8-hvhx
  • GO-2026-5775 GHSA-9g5q-2w5x-hmxf
  • GO-2026-5777 GHSA-rjr7-jggh-pgcp
  • GO-2026-5781
  • GO-2026-5841 GHSA-259r-337f-4rfw
  • GO-2026-5879 CVE-2026-50162 GHSA-8xwf-rjm4-xvhv
  • GO-2026-5880 CVE-2026-50163 GHSA-fxhp-mv3v-67qp
  • GO-2026-5882 CVE-2026-50151 GHSA-jxpm-75mh-9fp7
  • GO-2026-5884 GHSA-vh4v-2xq2-g5cg
  • GO-2026-5885 CVE-2026-48978 GHSA-xf85-363p-868w
  • GO-2026-5886 CVE-2026-44332 GHSA-g5vh-55hw-rxm8
  • GO-2026-5887 CVE-2026-45045 GHSA-gcfq-8gqf-4876
  • GO-2026-5912 CVE-2026-53624 GHSA-gv83-gqw6-9j2c
  • GO-2026-5954 CVE-2026-49838 GHSA-frrj-87jh-2772
  • GO-2026-5955 CVE-2026-49837 GHSA-gjrg-jjr3-56cm
  • GO-2026-5960 CVE-2026-54063 GHSA-h69g-9hx6-f3v4
  • GO-2026-5971 CVE-2026-37462 GHSA-pw7p-7fqv-hpj8
  • GO-2026-5983 CVE-2026-54448 GHSA-q3fv-x8vg-qqm4
  • GO-2026-6000 CVE-2026-50274 GHSA-74j5-xf3v-crq8
  • GO-2026-6058 CVE-2026-58442 GHSA-h2x6-g7q6-344v
  • GO-2026-6059 CVE-2026-58431 GHSA-h56g-4qw7-2mxg
  • GO-2026-6060 CVE-2026-58426 GHSA-hg5r-vq93-9fv6
  • GO-2026-6061 GHSA-hrxh-6v49-42gf
  • GO-2026-6062 CVE-2026-58434 GHSA-j2w3-9c3r-g83q
  • GO-2026-6063 CVE-2026-58417 GHSA-jr5x-6h83-wrxf
  • GO-2026-6064 CVE-2026-55984 GHSA-m932-crvm-gcp5
  • GO-2026-6065 CVE-2026-55982 GHSA-mg4f-x9v4-6h2p
  • GO-2026-6066 CVE-2026-58507 GHSA-p4mj-98mv-xq26
  • GO-2026-6067 CVE-2026-58445 GHSA-pgqf-926r-548m
  • GO-2026-6068 CVE-2026-58427 GHSA-prr9-9mp4-5gp2
  • GO-2026-6069 CVE-2026-58510 GHSA-q423-49rw-g9mh
  • GO-2026-6070 CVE-2026-58432 GHSA-q9pg-jj6x-j9p6
  • GO-2026-6071 CVE-2026-59766 GHSA-qf2f-qh6p-7v89
  • GO-2026-6072 CVE-2026-56750 GHSA-rgv6-xp99-6mgj
  • GO-2026-6073 CVE-2026-58435…
Record
openSUSE-SU-2026:21551-1
Updated
2026-11-02
OSVSUSE-SU-2026:23216-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260727T201416 2026-07-27T20:14:16Z (jsc#PED-11136):

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-5046 CVE-2026-46385 GHSA-w8j3-pq8g-8m7w
  • GO-2026-5047 CVE-2026-46384 GHSA-mc57-h6j3-3hmv
  • GO-2026-5048 GHSA-mx64-mj3q-7prj
  • GO-2026-5051
  • GO-2026-5069 CVE-2026-30246 GHSA-35hp-hqmv-8qg8
  • GO-2026-5074 CVE-2026-45022 GHSA-389r-gv7p-r3rp
  • GO-2026-5105 CVE-2026-41506 GHSA-3xc5-wrhm-f963
  • GO-2026-5116 CVE-2026-44517 GHSA-49p4-px3h-rq49
  • GO-2026-5158 CVE-2026-41178 GHSA-5wrp-cwcj-q835
  • GO-2026-5198 CVE-2026-41642 GHSA-7235-89m6-f4px
  • GO-2026-5208 CVE-2026-40890 GHSA-77fj-vx54-gvh7
  • GO-2026-5266 CVE-2026-41643 GHSA-8rxh-r2p6-7f2q
  • GO-2026-5309 GHSA-c3wq-j5vh-68rc
  • GO-2026-5327 CVE-2026-2303 GHSA-cp6g-7hqx-qxhp
  • GO-2026-5336 CVE-2026-45571 GHSA-crhj-59gh-8x96
  • GO-2026-5346 CVE-2026-52845 GHSA-f59h-q822-g45g
  • GO-2026-5408 GHSA-gx7w-56w6-g48x
  • GO-2026-5426 CVE-2026-39883 GHSA-hfvc-g4fc-pqhx
  • GO-2026-5435 CVE-2026-35206 GHSA-hr2v-4r36-88hr
  • GO-2026-5452 CVE-2026-34783 GHSA-j6v5-g24h-vg4j
  • GO-2026-5463 CVE-2026-8276 GHSA-jcqv-2g3v-gm88
  • GO-2026-5471 CVE-2026-6993 GHSA-jj45-xvq5-rhh9
  • GO-2026-5490 CVE-2026-44740 GHSA-m3xc-h892-ggx6
  • GO-2026-5492 CVE-2026-45135 GHSA-m675-2p33-xv9g
  • GO-2026-5506 CVE-2026-29181 GHSA-mh2q-q3fh-2475
  • GO-2026-5525 CVE-2026-42285 GHSA-p3w2-64xm-833j
  • GO-2026-5543 CVE-2026-32952 GHSA-pjcq-xvwq-hhpj
  • GO-2026-5548 CVE-2026-44166 GHSA-pq7p-mc74-g65w
  • GO-2026-5566 CVE-2026-35205 GHSA-q5jf-9vfq-h4h7
  • GO-2026-5569 GHSA-q76j-gcg9-vxc6
  • GO-2026-5585 CVE-2026-42554 GHSA-qjv7-627w-8qjv
  • GO-2026-5593 CVE-2026-40611 GHSA-qqx8-2xmm-jrv8
  • GO-2026-5595 CVE-2026-52844 GHSA-qrp7-cvwr-j2c6
  • GO-2026-5597 CVE-2026-44973 GHSA-qw64-3x98-g7q2
  • GO-2026-5606 GHSA-r46f-3rpw-hxrv
  • GO-2026-5617 CVE-2026-42306 GHSA-rg2x-37c3-w2rh
  • GO-2026-5660 CVE-2026-52846 GHSA-vcc4-2c75-vc9v
  • GO-2026-5666 CVE-2026-35204 GHSA-vmx8-mqv2-9gmg
  • GO-2026-5684 CVE-2026-42328 GHSA-w239-58x2-q8p5
  • GO-2026-5693 GHSA-w5pp-99ch-qj29
  • GO-2026-5730 GHSA-wwhq-w58m-w29c
  • GO-2026-5736 CVE-2026-44283 GHSA-x35m-3gp4-4fh5
  • GO-2026-5740 CVE-2026-44301 GHSA-x597-9fr4-5857
  • GO-2026-5748 CVE-2026-7482 GHSA-x8qc-fggm-mpqg
  • GO-2026-5750 CVE-2026-7020 GHSA-x99g-8v8j-25j2
  • GO-2026-5774 GHSA-3fxj-6jh8-hvhx
  • GO-2026-5775 GHSA-9g5q-2w5x-hmxf
  • GO-2026-5777 GHSA-rjr7-jggh-pgcp
  • GO-2026-5781
  • GO-2026-5841 GHSA-259r-337f-4rfw
  • GO-2026-5879 CVE-2026-50162 GHSA-8xwf-rjm4-xvhv
  • GO-2026-5880 CVE-2026-50163 GHSA-fxhp-mv3v-67qp
  • GO-2026-5882 CVE-2026-50151 GHSA-jxpm-75mh-9fp7
  • GO-2026-5884 GHSA-vh4v-2xq2-g5cg
  • GO-2026-5885 CVE-2026-48978 GHSA-xf85-363p-868w
  • GO-2026-5886 CVE-2026-44332 GHSA-g5vh-55hw-rxm8
  • GO-2026-5887 CVE-2026-45045 GHSA-gcfq-8gqf-4876
  • GO-2026-5912 CVE-2026-53624 GHSA-gv83-gqw6-9j2c
  • GO-2026-5954 CVE-2026-49838 GHSA-frrj-87jh-2772
  • GO-2026-5955 CVE-2026-49837 GHSA-gjrg-jjr3-56cm
  • GO-2026-5960 CVE-2026-54063 GHSA-h69g-9hx6-f3v4
  • GO-2026-5971 CVE-2026-37462 GHSA-pw7p-7fqv-hpj8
  • GO-2026-5983 CVE-2026-54448 GHSA-q3fv-x8vg-qqm4
  • GO-2026-6000 CVE-2026-50274 GHSA-74j5-xf3v-crq8
  • GO-2026-6058 CVE-2026-58442 GHSA-h2x6-g7q6-344v
  • GO-2026-6059 CVE-2026-58431 GHSA-h56g-4qw7-2mxg
  • GO-2026-6060 CVE-2026-58426 GHSA-hg5r-vq93-9fv6
  • GO-2026-6061 GHSA-hrxh-6v49-42gf
  • GO-2026-6062 CVE-2026-58434 GHSA-j2w3-9c3r-g83q
  • GO-2026-6063 CVE-2026-58417 GHSA-jr5x-6h83-wrxf
  • GO-2026-6064 CVE-2026-55984 GHSA-m932-crvm-gcp5
  • GO-2026-6065 CVE-2026-55982 GHSA-mg4f-x9v4-6h2p
  • GO-2026-6066 CVE-2026-58507 GHSA-p4mj-98mv-xq26
  • GO-2026-6067 CVE-2026-58445 GHSA-pgqf-926r-548m
  • GO-2026-6068 CVE-2026-58427 GHSA-prr9-9mp4-5gp2
  • GO-2026-6069 CVE-2026-58510 GHSA-q423-49rw-g9mh
  • GO-2026-6070 CVE-2026-58432 GHSA-q9pg-jj6x-j9p6
  • GO-2026-6071 CVE-2026-59766 GHSA-qf2f-qh6p-7v89
  • GO-2026-6072 CVE-2026-56750 GHSA-rgv6-xp99-6mgj
  • GO-2026-6073 CVE-2026-58435…
Record
SUSE-SU-2026:23216-1
Updated
2026-11-02
OSVSUSE-SU-2026:23227-1 No score

Security update for govulncheck-vulndb

This update for govulncheck-vulndb fixes the following issues:

  • Update to version 0.0.20260727T201416 2026-07-27T20:14:16Z (jsc#PED-11136):

Go CVE Numbering Authority IDs added or updated with aliases:

  • GO-2026-5046 CVE-2026-46385 GHSA-w8j3-pq8g-8m7w
  • GO-2026-5047 CVE-2026-46384 GHSA-mc57-h6j3-3hmv
  • GO-2026-5048 GHSA-mx64-mj3q-7prj
  • GO-2026-5051
  • GO-2026-5069 CVE-2026-30246 GHSA-35hp-hqmv-8qg8
  • GO-2026-5074 CVE-2026-45022 GHSA-389r-gv7p-r3rp
  • GO-2026-5105 CVE-2026-41506 GHSA-3xc5-wrhm-f963
  • GO-2026-5116 CVE-2026-44517 GHSA-49p4-px3h-rq49
  • GO-2026-5158 CVE-2026-41178 GHSA-5wrp-cwcj-q835
  • GO-2026-5198 CVE-2026-41642 GHSA-7235-89m6-f4px
  • GO-2026-5208 CVE-2026-40890 GHSA-77fj-vx54-gvh7
  • GO-2026-5266 CVE-2026-41643 GHSA-8rxh-r2p6-7f2q
  • GO-2026-5309 GHSA-c3wq-j5vh-68rc
  • GO-2026-5327 CVE-2026-2303 GHSA-cp6g-7hqx-qxhp
  • GO-2026-5336 CVE-2026-45571 GHSA-crhj-59gh-8x96
  • GO-2026-5346 CVE-2026-52845 GHSA-f59h-q822-g45g
  • GO-2026-5408 GHSA-gx7w-56w6-g48x
  • GO-2026-5426 CVE-2026-39883 GHSA-hfvc-g4fc-pqhx
  • GO-2026-5435 CVE-2026-35206 GHSA-hr2v-4r36-88hr
  • GO-2026-5452 CVE-2026-34783 GHSA-j6v5-g24h-vg4j
  • GO-2026-5463 CVE-2026-8276 GHSA-jcqv-2g3v-gm88
  • GO-2026-5471 CVE-2026-6993 GHSA-jj45-xvq5-rhh9
  • GO-2026-5490 CVE-2026-44740 GHSA-m3xc-h892-ggx6
  • GO-2026-5492 CVE-2026-45135 GHSA-m675-2p33-xv9g
  • GO-2026-5506 CVE-2026-29181 GHSA-mh2q-q3fh-2475
  • GO-2026-5525 CVE-2026-42285 GHSA-p3w2-64xm-833j
  • GO-2026-5543 CVE-2026-32952 GHSA-pjcq-xvwq-hhpj
  • GO-2026-5548 CVE-2026-44166 GHSA-pq7p-mc74-g65w
  • GO-2026-5566 CVE-2026-35205 GHSA-q5jf-9vfq-h4h7
  • GO-2026-5569 GHSA-q76j-gcg9-vxc6
  • GO-2026-5585 CVE-2026-42554 GHSA-qjv7-627w-8qjv
  • GO-2026-5593 CVE-2026-40611 GHSA-qqx8-2xmm-jrv8
  • GO-2026-5595 CVE-2026-52844 GHSA-qrp7-cvwr-j2c6
  • GO-2026-5597 CVE-2026-44973 GHSA-qw64-3x98-g7q2
  • GO-2026-5606 GHSA-r46f-3rpw-hxrv
  • GO-2026-5617 CVE-2026-42306 GHSA-rg2x-37c3-w2rh
  • GO-2026-5660 CVE-2026-52846 GHSA-vcc4-2c75-vc9v
  • GO-2026-5666 CVE-2026-35204 GHSA-vmx8-mqv2-9gmg
  • GO-2026-5684 CVE-2026-42328 GHSA-w239-58x2-q8p5
  • GO-2026-5693 GHSA-w5pp-99ch-qj29
  • GO-2026-5730 GHSA-wwhq-w58m-w29c
  • GO-2026-5736 CVE-2026-44283 GHSA-x35m-3gp4-4fh5
  • GO-2026-5740 CVE-2026-44301 GHSA-x597-9fr4-5857
  • GO-2026-5748 CVE-2026-7482 GHSA-x8qc-fggm-mpqg
  • GO-2026-5750 CVE-2026-7020 GHSA-x99g-8v8j-25j2
  • GO-2026-5774 GHSA-3fxj-6jh8-hvhx
  • GO-2026-5775 GHSA-9g5q-2w5x-hmxf
  • GO-2026-5777 GHSA-rjr7-jggh-pgcp
  • GO-2026-5781
  • GO-2026-5841 GHSA-259r-337f-4rfw
  • GO-2026-5879 CVE-2026-50162 GHSA-8xwf-rjm4-xvhv
  • GO-2026-5880 CVE-2026-50163 GHSA-fxhp-mv3v-67qp
  • GO-2026-5882 CVE-2026-50151 GHSA-jxpm-75mh-9fp7
  • GO-2026-5884 GHSA-vh4v-2xq2-g5cg
  • GO-2026-5885 CVE-2026-48978 GHSA-xf85-363p-868w
  • GO-2026-5886 CVE-2026-44332 GHSA-g5vh-55hw-rxm8
  • GO-2026-5887 CVE-2026-45045 GHSA-gcfq-8gqf-4876
  • GO-2026-5912 CVE-2026-53624 GHSA-gv83-gqw6-9j2c
  • GO-2026-5954 CVE-2026-49838 GHSA-frrj-87jh-2772
  • GO-2026-5955 CVE-2026-49837 GHSA-gjrg-jjr3-56cm
  • GO-2026-5960 CVE-2026-54063 GHSA-h69g-9hx6-f3v4
  • GO-2026-5971 CVE-2026-37462 GHSA-pw7p-7fqv-hpj8
  • GO-2026-5983 CVE-2026-54448 GHSA-q3fv-x8vg-qqm4
  • GO-2026-6000 CVE-2026-50274 GHSA-74j5-xf3v-crq8
  • GO-2026-6058 CVE-2026-58442 GHSA-h2x6-g7q6-344v
  • GO-2026-6059 CVE-2026-58431 GHSA-h56g-4qw7-2mxg
  • GO-2026-6060 CVE-2026-58426 GHSA-hg5r-vq93-9fv6
  • GO-2026-6061 GHSA-hrxh-6v49-42gf
  • GO-2026-6062 CVE-2026-58434 GHSA-j2w3-9c3r-g83q
  • GO-2026-6063 CVE-2026-58417 GHSA-jr5x-6h83-wrxf
  • GO-2026-6064 CVE-2026-55984 GHSA-m932-crvm-gcp5
  • GO-2026-6065 CVE-2026-55982 GHSA-mg4f-x9v4-6h2p
  • GO-2026-6066 CVE-2026-58507 GHSA-p4mj-98mv-xq26
  • GO-2026-6067 CVE-2026-58445 GHSA-pgqf-926r-548m
  • GO-2026-6068 CVE-2026-58427 GHSA-prr9-9mp4-5gp2
  • GO-2026-6069 CVE-2026-58510 GHSA-q423-49rw-g9mh
  • GO-2026-6070 CVE-2026-58432 GHSA-q9pg-jj6x-j9p6
  • GO-2026-6071 CVE-2026-59766 GHSA-qf2f-qh6p-7v89
  • GO-2026-6072 CVE-2026-56750 GHSA-rgv6-xp99-6mgj
  • GO-2026-6073 CVE-2026-58435…
Record
SUSE-SU-2026:23227-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/gofiber/fiber/v3
Go
 through 3.1.0
3.2.0
github.com/gofiber/fiber/v2
Go
 through 2.52.12
2.52.13
github.com/gofiber/fiber/v3
Go
 before 3.2.0
3.2.0
github.com/gofiber/fiber/v2
Go
 before 2.52.13
2.52.13
govulncheck-vulndb
SUSE:Linux Enterprise Server 16.0
From an advisory covering 77 CVEs
 before 0.0.20260727T201416-160000.1.1
0.0.20260727T201416-160000.1.1
govulncheck-vulndb
SUSE:Linux Enterprise Server for SAP applications 16.0
From an advisory covering 77 CVEs
 before 0.0.20260727T201416-160000.1.1
0.0.20260727T201416-160000.1.1
govulncheck-vulndb
openSUSE:Leap 16.0
From an advisory covering 77 CVEs
 before 0.0.20260727T201416-160000.1.1
0.0.20260727T201416-160000.1.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-42554 is a medium vulnerability (CVSS 5.3) in Gofiber Fiber, published May 5, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 11th percentile. Fixed in github.com/gofiber/fiber/v3 3.2.0.

References

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Left out here: the rest of 5 source descriptions. The JSON record has them.

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